fix: toh-pt6 and embeded live example in ngmodule.

public/docs/ts/latest/guide/ngmodule.jade

@@ -1112,8 +1112,6 @@ a#feature-modules
   
   试试范例的`ContactModule`版。
   
-  <live-example embedded plnkr="contact.2" img="devguide/ngmodule/contact-2-plunker.png">Try the live example.</live-example>
-  
   <live-example embedded plnkr="contact.2" img="devguide/ngmodule/contact-2-plunker.png">试试在线例子</live-example>
 
 a#lazy-load

public/docs/ts/latest/tutorial/toh-pt6.jade

@@ -212,6 +212,8 @@ block dont-be-distracted-by-backend-subst
 :marked
   Our updated import statements are now:
 
+  更新后的导入声明如下：
+
 +makeExcerpt('app/hero.service.ts (updated imports)', 'imports')
 
 - var _h3id = `http-${_promise}`
@@ -219,6 +221,8 @@ block dont-be-distracted-by-backend-subst
   Refresh the browser, and the hero data should be successfully loaded from the
   mock server.
 
+  刷新浏览器后，英雄数据就会从Mock服务器被成功读取。
+
   <h3 id="!{_h3id}">HTTP !{_Promise}</h3>
 
   ### Http承诺(Promise)