docs: refactor in markdown

Author: awxiaoxian2020

pom.xml

@@ -419,6 +419,9 @@
             </configuration>
           </execution>
         </executions>
+        <configuration>
+          <escapeString>\</escapeString>
+        </configuration>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

src/site/markdown/configuration.md

@@ -39,10 +39,10 @@ The configuration XML file contains settings for the core of the MyBatis system,
     <environment id="development">
       <transactionManager type="JDBC"/>
       <dataSource type="POOLED">
-        <property name="driver" value="${driver}"/>
-        <property name="url" value="${url}"/>
-        <property name="username" value="${username}"/>
-        <property name="password" value="${password}"/>
+        <property name="driver" value="\${driver}"/>
+        <property name="url" value="\${url}"/>
+        <property name="username" value="\${username}"/>
+        <property name="password" value="\${password}"/>
       </dataSource>
     </environment>
   </environments>