QML State Machine plugin: correct URL in Q_PLUGIN_METADATA

org.qt-project.org is redundant

Change-Id: Id6a6794e1fc1e4403b3bfcdebbe06a487f904041
Reviewed-by: Sebastian Sauer <sebastian.sauer@kdab.com>
Reviewed-by: Brett Stottlemyer <bstottle@ford.com>
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>

src/imports/statemachine/plugin.cpp

@@ -46,7 +46,7 @@ QT_BEGIN_NAMESPACE
 class QtQmlStateMachinePlugin : public QQmlExtensionPlugin
 {
     Q_OBJECT
-    Q_PLUGIN_METADATA(IID "org.qt-project.org.Qt.QtQml.StateMachine/1.0")
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtQml.StateMachine/1.0")
 
 public:
     void registerTypes(const char *uri)