Fix extension methods example in the zh-cn documentation

harisawa · harisawa · commit 9e0afdbf4f77 · 2016-01-12T13:11:17.000+09:00
diff --git a/zh-cn/overviews/core/value-classes.md b/zh-cn/overviews/core/value-classes.md
@@ -40,7 +40,7 @@ Value class只能继承universal traits，但其自身不能再被继承。所
 
 下面有关RichInt的代码片段示范了RichInt是如何继承Int来允许3.toHexString的表达式：
 
-    class RichInt(val self: Int) extends AnyVal {
+    implicit class RichInt(val self: Int) extends AnyVal {
       def toHexString: String = java.lang.Integer.toHexString(self)
     }
     

Original file line number	Diff line number	Diff line change
`@@ -40,7 +40,7 @@ Value class只能继承universal traits，但其自身不能再被继承。所`
`40`	`40`
`41`	`41`	`下面有关RichInt的代码片段示范了RichInt是如何继承Int来允许3.toHexString的表达式：`
`42`	`42`
`43`		`- class RichInt(val self: Int) extends AnyVal {`
	`43`	`+ implicit class RichInt(val self: Int) extends AnyVal {`
`44`	`44`	`def toHexString: String = java.lang.Integer.toHexString(self)`
`45`	`45`	`}`
`46`	`46`