Fix typo.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1448370 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java b/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
index b7847a8..807fb88 100644
--- a/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
+++ b/src/main/java/org/apache/commons/lang3/builder/ReflectionToStringBuilder.java
@@ -464,7 +464,7 @@
      * <ul>
      * <li>Transient fields are appended only if {@link #isAppendTransients()} returns <code>true</code>.
      * <li>Static fields are appended only if {@link #isAppendStatics()} returns <code>true</code>.
-     * <li>Inner class fields are not appened.</li>
+     * <li>Inner class fields are not appended.</li>
      * </ul>
      *
      * @param field