docs: remove deep nesting example and add override example to expressions

Author: melihguleyupoglu

documentation/docs/01-introduction/xx-props.md

@@ -43,51 +43,11 @@ You can specify a fallback value for a prop. It will be used if the component's
 
 <Nested answer={42} /> <!-- answer is set to 42 -->
 <Nested answer={null} /> <!-- answer is set to null (default value is not used)-->
-<Nested /> <!-- answer is set 3 (default value) -->
-<Nested answer={undefined}/> <!-- answer is set 3 (default value) -->
+<Nested /> <!-- answer is set to 3 (default value) -->
+<Nested answer={undefined}/> <!-- answer is set to 3 (default value) -->
 
 ```
 
-Deep nesting refers to having components nested within other components across multiple levels. In this setup, props can be passed from parent to child components through several layers.
-
-```svelte
-<script>
-	let count = 3;
-</script>
-
-<!-- App.svelte -->
-<First {count} />
-```
-
-```svelte
-<script>
-	export let count;
-</script>
-
-<!-- First.svelte -->
-<p>First: {count}</p>
-<Second {count} />
-```
-
-```svelte
-<script>
-	export let count;
-</script>
-
-<!-- Second.svelte -->
-<p>Second: {count}</p>
-<Third {count} />
-```
-
-```svelte
-<script>
-	export let count;
-</script>
-
-<!-- Third.svelte -->
-<p>Third: {count}</p>
-```
-
 To get all properties, use rest syntax:
 
 ```svelte

documentation/docs/03-template-syntax/01-basic-markup.md

@@ -188,17 +188,16 @@ When using {expression} inside markup, Svelte automatically converts the value t
 	let emptyStr = "";
 	let num = 1;
 	let bool = false;
-	let obj = { key: "value" };
-	let objToStr = obj.toString();
+	let obj1 = { key: "value" };
+	let obj2 = { toString: () => "str" };
 	let empty = undefined;
 	let nul = null;
 
-
 <p>{emptyStr}</p> <!-- Renders as: <p></p> -->
 <p>{num}</p>   <!-- Renders as: <p>1</p> -->
 <p>{bool}</p>  <!-- Renders as: <p>false</p> -->
-<p>{obj}</p>   <!-- Renders as: <p>[object Object]</p> -->
-<p>{objToStr}</p> <!-- Renders as: <p>[object Object]</p> -->
+<p>{obj1}</p>   <!-- Renders as: <p>[object Object]</p> -->
+<p>{obj2}</p> <!-- Renders as: <p>str</p> -->
 <p>{empty}</p> <!-- Renders as: <p></p> (empty string) -->
 <p>{nul}</p> <!-- Renders as: <p></p> -->
 ```