FIX: PluginFramework: Fix link in doxygen documentation

Libs/PluginFramework/ctkPluginContext.h

@@ -315,7 +315,7 @@
      * is not an instance of all the classes named when the service
      * was registered or the <code>ctkServiceFactory</code> object throws an
      * exception, <code>0</code> is returned and a Framework event of type
-     * {@link FrameworkEvent::ERROR} containing a {@link ctkServiceException}
+     * {@link ctkPluginFrameworkEvent::ERROR} containing a {@link ctkServiceException}
      * describing the error is fired.
      * <li>The service object for the service is returned.
      * </ol>