docs: update str interpolation dollar escape documents

docs/reference/lang/tour.md

@@ -360,18 +360,19 @@ assert "length length".title() == "Length Length"
 assert x.upper() == "LENGTH"
 ```
 
-There are 2 different ways to format a string: to use the `"{}".format()` built-in function, or to specify the variable between the curly braces and use a `$` mark to tell KCL to extract its value. This is called **string interpolation** in KCL. In following example, both `a` and `b` will be assigned to string `"hello world"`.
+There are 2 different ways to format a string: to use the `"{}".format()` built-in function, or to specify the variable between the curly braces and use a `${}` mark to tell KCL to extract its value. This is called **string interpolation** in KCL. In following example, both `a` and `b` will be assigned to string `"hello world"`.
 
-Besides, the variable to serialized can be extracted in special data format, such as YAML or JSON. In this case, a `#yaml` or `#json` can be included within the curly braces.
+Besides, the variable to serialized can be extracted in special data format, such as YAML or JSON. In this case, a `#yaml` or `#json` can be included within the curly braces. 
 
-Specifically, when the dollar sign `$` itself is needed in a **string interpolation**, it needs to be escaped and use `$$` instead. Or in another way, `+` can be used to concat the dollar sign with the **string interpolation** to avoid that escape. In following example, both `c` and `c2` will be assigned to string `$hello world$`
+Note that if we don't want to interpolate variables, we can add the `\` character before `$`.
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 
 myDict = {
     "key1" = "value1"

docs/user_docs/support/faq-kcl.md

@@ -515,14 +515,15 @@ data: value
 jsonData: '{"key": "value"}'
 ```
 
-Note that if we want to use the `$` character alone in the `${}` interpolated string, we need to escape the `$` with `$$`
+Note that if we don't want to interpolate variables, we can add the `\` character before `$`.
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 ```
 
 The output YAML is

i18n/zh-CN/docusaurus-plugin-content-docs/current/reference/lang/tour.md

@@ -364,14 +364,15 @@ assert x.upper() == "LENGTH"
 
 此外，要序列化的变量可以以特殊的数据格式提取，例如 YAML 或 JSON。在这种情况中，`#yaml` 或 `#json` 可以包含在花括号中。
 
-具体来说，当 `$` 符号本身需要出现在**插值字符串**中，需要使用 `$$` 转义。或者使用 `+` 符号连接 `$` 符号和插值字符串来避免转义。在以下示例中，`c` 和 `c2` 的值都是 `$hello world$`。
+注意，如果不想 `${...}` 表示字符串插值 ，我们可以在 `$` 之前添加`\` 字符表示直接以字符串的形式输出 `${...}`。
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 
 myDict = {
     "key1" = "value1"

i18n/zh-CN/docusaurus-plugin-content-docs/current/user_docs/support/faq-kcl.md

@@ -517,14 +517,15 @@ data: value
 jsonData: '{"key": "value"}'
 ```
 
-注意，如果想在 `${}` 插值字符串中单独使用 `$` 字符，则需要使用 `$$` 对 `$` 进行转义
+注意，如果不想 `${...}` 表示字符串插值 ，我们可以在 `$` 之前添加`\` 字符表示直接以字符串的形式输出 `${...}`。
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 ```
 
 输出 YAML 为:

i18n/zh-CN/docusaurus-plugin-content-docs/version-0.9/reference/lang/tour.md

@@ -364,14 +364,15 @@ assert x.upper() == "LENGTH"
 
 此外，要序列化的变量可以以特殊的数据格式提取，例如 YAML 或 JSON。在这种情况中，`#yaml` 或 `#json` 可以包含在花括号中。
 
-具体来说，当 `$` 符号本身需要出现在**插值字符串**中，需要使用 `$$` 转义。或者使用 `+` 符号连接 `$` 符号和插值字符串来避免转义。在以下示例中，`c` 和 `c2` 的值都是 `$hello world$`。
+注意，如果不想 `${...}` 表示字符串插值 ，我们可以在 `$` 之前添加`\` 字符表示直接以字符串的形式输出 `${...}`。
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 
 myDict = {
     "key1" = "value1"

i18n/zh-CN/docusaurus-plugin-content-docs/version-0.9/user_docs/support/faq-kcl.md

@@ -517,14 +517,15 @@ data: value
 jsonData: '{"key": "value"}'
 ```
 
-注意，如果想在 `${}` 插值字符串中单独使用 `$` 字符，则需要使用 `$$` 对 `$` 进行转义
+注意，如果不想 `${...}` 表示字符串插值 ，我们可以在 `$` 之前添加`\` 字符表示直接以字符串的形式输出 `${...}`。
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 ```
 
 输出 YAML 为:
@@ -2642,4 +2643,4 @@ another_module = "0.1.1"
 import another_module
 ```
 
-`another-module = "0.1.1"` 和 `another_module = "0.1.1"` 是等价的, 如果同时在 `kcl.mod` 中使用这两种写法会得到一个错误。
+`another-module = "0.1.1"` 和 `another_module = "0.1.1"` 是等价的, 如果同时在 `kcl.mod` 中使用这两种写法会得到一个错误。

versioned_docs/version-0.9/reference/lang/tour.md

@@ -360,18 +360,19 @@ assert "length length".title() == "Length Length"
 assert x.upper() == "LENGTH"
 ```
 
-There are 2 different ways to format a string: to use the `"{}".format()` built-in function, or to specify the variable between the curly braces and use a `$` mark to tell KCL to extract its value. This is called **string interpolation** in KCL. In following example, both `a` and `b` will be assigned to string `"hello world"`.
+There are 2 different ways to format a string: to use the `"{}".format()` built-in function, or to specify the variable between the curly braces and use a `${}` mark to tell KCL to extract its value. This is called **string interpolation** in KCL. In following example, both `a` and `b` will be assigned to string `"hello world"`.
 
-Besides, the variable to serialized can be extracted in special data format, such as YAML or JSON. In this case, a `#yaml` or `#json` can be included within the curly braces.
+Besides, the variable to serialized can be extracted in special data format, such as YAML or JSON. In this case, a `#yaml` or `#json` can be included within the curly braces. 
 
-Specifically, when the dollar sign `$` itself is needed in a **string interpolation**, it needs to be escaped and use `$$` instead. Or in another way, `+` can be used to concat the dollar sign with the **string interpolation** to avoid that escape. In following example, both `c` and `c2` will be assigned to string `$hello world$`
+Note that if we don't want to interpolate variables, we can add the `\` character before `$`.
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 
 myDict = {
     "key1" = "value1"

versioned_docs/version-0.9/user_docs/getting-started/index.md

@@ -1,6 +1,6 @@
 # Getting Started
 
-Get started include a quick overview of the KCL programming language.
+Getting Started include a quick overview of the KCL programming language.
 
 import DocCardList from '@theme/DocCardList';
 

versioned_docs/version-0.9/user_docs/support/faq-kcl.md

@@ -515,14 +515,15 @@ data: value
 jsonData: '{"key": "value"}'
 ```
 
-Note that if we want to use the `$` character alone in the `${}` interpolated string, we need to escape the `$` with `$$`
+Note that if we don't want to interpolate variables, we can add the `\` character before `$`.
 
 ```python
 world = "world"
-a = "hello {}".format(world)       # "hello world"
-b = "hello ${world}"               # "hello world"
-c = "$$hello ${world}$$"           # "$hello world$"
-c2 = "$" + "hello ${world}" + "$"  # "$hello world$"
+a = "hello {}".format(world)        # "hello world"
+b = "hello ${world}"                # "hello world"
+c1 = "$hello ${world}$"             # "$hello world$"
+c2 = "$" + "hello ${world}" + "$"   # "$hello world$"
+c3 = "$" + "hello \${world}" + "$"  # "$hello ${world}$"
 ```
 
 The output YAML is