Add missing param tag.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1448288 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/lang3/text/StrBuilder.java b/src/main/java/org/apache/commons/lang3/text/StrBuilder.java
index 1cfce4c..98ee66d 100644
--- a/src/main/java/org/apache/commons/lang3/text/StrBuilder.java
+++ b/src/main/java/org/apache/commons/lang3/text/StrBuilder.java
@@ -1067,6 +1067,7 @@
      * Appending a null array will have no effect.
      * Each object is appended using {@link #append(Object)}.
      *
+     * @param <T>  the element type
      * @param array  the array to append
      * @return this, to enable chaining
      * @since 2.3