Add missing Javadoc @throws text.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1634413 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/main/java/org/apache/commons/codec/language/AbstractCaverphone.java

@@ -71,6 +71,7 @@ public Object encode(final Object source) throws EncoderException {
      *            Second of two strings to compare
      * @return <code>true</code> if the encodings of these strings are identical, <code>false</code> otherwise.
      * @throws EncoderException
+     *             thrown if there is an error condition during the encoding process.
      */
     public boolean isEncodeEqual(final String str1, final String str2) throws EncoderException {
         return this.encode(str1).equals(this.encode(str2));