QDS Components: Replace "item" with "component" in UI text

Task-number: QDS-3778
Change-Id: I67cfaad948fe9a43b2312cdb5e248d0849b7c6d9
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmljseditor/qmljscomponentnamedialog.cpp

@@ -169,7 +169,7 @@ QString ComponentNameDialog::isValid() const
         return tr("Invalid path");
 
     if (QDir(ui->pathEdit->path()).exists(compName + u".qml"))
-        return tr("Component exists already");
+        return tr("Component already exists");
 
     return QString();
 }