QmlProject: Qml runtime command parameter -L has been replaced by -I

See commit c3a54c470 in qt

src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp

@@ -133,7 +133,7 @@ QStringList QmlProjectRunConfiguration::viewerArguments() const
 
     // arguments from .qmlproject file
     foreach (const QString &importPath, qmlTarget()->qmlProject()->importPaths()) {
-        args.append(QLatin1String("-L"));
+        args.append(QLatin1String("-I"));
         args.append(importPath);
     }