fixed example readme

examples/mixed/README.md

@@ -16,6 +16,8 @@ require([
 );
 ```
 
+# amd.js
+
 ``` javascript
 // AMD Module Format
 define(
@@ -30,6 +32,8 @@ define(
 );
 ```
 
+# commonjs.js
+
 ``` javascript
 // CommonJs Module Format
 module.exports = 123;

examples/mixed/template.md

@@ -4,10 +4,14 @@
 {{example.js}}
 ```
 
+# amd.js
+
 ``` javascript
 {{amd.js}}
 ```
 
+# commonjs.js
+
 ``` javascript
 {{commonjs.js}}
 ```