Coding gudilines for class and methods javadocs fixed.

Change-Id: I0153e6391c9ec9eacaac65c3989834b6bf5c65bf
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeDefListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeDefListener.java
index 8b9d772..bfa22a4 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeDefListener.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/TypeDefListener.java
@@ -87,7 +87,7 @@
  */
 
 /**
- * Implements listener based call back function corresponding to the "typedef"
+ * Represents listener based call back function corresponding to the "typedef"
  * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
  */
 public final class TypeDefListener {