Comment clean-up

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/TypeAlias.java

Index: editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/TypeAlias.java
===================================================================
--- editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/TypeAlias.java	(revision 9355)
+++ editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/ast/TypeAlias.java	(working copy)
@@ -16,7 +16,7 @@
 import com.google.dart.engine.scanner.Token;
 
 /**
- * Instances of the class <code>TypeAlias</code> represent a type alias.
+ * Instances of the class {@code TypeAlias} represent a type alias.
  * 
  * <pre>
  * typeAlias ::=
@@ -41,7 +41,7 @@
   private SimpleIdentifier name;
 
   /**
-   * The type parameters for the type, or <code>null</code> if the type does not have any type
+   * The type parameters for the type, or {@code null} if the type does not have any type
    * parameters.
    */
   private TypeParameterList typeParameters;
@@ -145,8 +145,8 @@
   }
 
   /**
-   * Return the type parameters for the function type, or <code>null</code> if the type does not
-   * have any type parameters.
+   * Return the type parameters for the function type, or {@code null} if the type does not have any
+   * type parameters.
    * 
    * @return the type parameters for the function type
    */