fix: 英文不自动隐藏

#50

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

@@ -349,8 +349,8 @@ code-example(format="").
 
 .alert.is-important
   :marked
-    If a component, directive, or pipe belongs to a module in the `imports` array, ​_DON'T_​ declare it in the `declarations` array.
-    If you wrote it and it should belong to this module, ​_DO_​ declare it in the `declarations` array.
+    If a component, directive, or pipe belongs to a module in the `imports` array, _DON'T_ declare it in the `declarations` array.
+    If you wrote it and it should belong to this module, _DO_ declare it in the `declarations` array.
     
     如果一个组件、指令或管道出现在模块的`imports`数组中，就说明它是外来模块，_不要_再到`declarations`数组中声明它们。
     如果你自己写的它，并且它属于当前模块，_就要_把它声明在`declarations`数组中。