Adding return tag info

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@597283 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/java/org/apache/commons/lang/text/NameKeyedMetaFormat.java b/src/java/org/apache/commons/lang/text/NameKeyedMetaFormat.java
index 9caaf4d..9e3f8c4 100644
--- a/src/java/org/apache/commons/lang/text/NameKeyedMetaFormat.java
+++ b/src/java/org/apache/commons/lang/text/NameKeyedMetaFormat.java
@@ -59,7 +59,7 @@
          * 
          * @param key
          * @param format
-         * @return
+         * @return Builder reference to this object
          */
         public Builder put(String key, Format format) {
             keyedFormats.put(key, format);