Fix accessibility issue (#25)

Author: zhengjl

api/src/main/java/javax/xml/ws/wsaddressing/W3CEndpointReferenceBuilder.java

@@ -160,7 +160,7 @@ public W3CEndpointReferenceBuilder serviceName(QName serviceName) {
      * Sets the {@code endpointName} as
      * {@code wsam:ServiceName/@EndpointName} in the
      * {@code wsa:Metadata} element. This method can only be called
-     * after the {@link #serviceName} method has been called.
+     * after the {@link #serviceName(QName)} method has been called.
      * <p>
      * See <a href="http://www.w3.org/TR/2007/REC-ws-addr-metadata-20070904/#refmetadatfromepr">
      * 2.1 Referencing WSDL Metadata from an EPR</a> for more details.