extend xmlrpc service example / fix typo

src/etc/inc/xmlrpc/legacy.inc

@@ -41,7 +41,7 @@ function xmlrpc_publishable_legacy()
     );
 
 
-    return array($publish);
+    return $publish;
 }
 
 /**

src/etc/inc/xmlrpc/test.inc

@@ -41,7 +41,7 @@ function xmlrpc_publishable_test()
  * test function
  * @return string
  */
-function test()
+function test($message="test")
 {
-    return "test";
+    return $message;
 }