Fix javadoc

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1821661 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/java/org/apache/tomcat/util/buf/CharChunk.java b/java/org/apache/tomcat/util/buf/CharChunk.java
index 2c37fe3..6805b48 100644
--- a/java/org/apache/tomcat/util/buf/CharChunk.java
+++ b/java/org/apache/tomcat/util/buf/CharChunk.java
@@ -278,7 +278,7 @@
     /**
      * Append a string to the buffer.
      *
-     * @param s The string
+     * @param sb The string builder
      * @throws IOException Writing overflow data to the output channel failed
      *
      * @deprecated Unused. Will be removed in Tomcat 8.0.x onwards.