UI text: fix capitalization for Qt Designer Plugins

Change-Id: I421d445d0ee5052af2e08d0e33fbfe773c059c10
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/plugins/designer/formeditorw.cpp

@@ -553,7 +553,7 @@ void FormEditorW::setupActions()
     addToolAction(actionFormSettings, m_contexts, Core::Id("FormEditor.FormSettings"), mformtools);
 
     mformtools->addSeparator(m_contexts);
-    m_actionAboutPlugins = new QAction(tr("About Qt Designer plugins..."), this);
+    m_actionAboutPlugins = new QAction(tr("About Qt Designer Plugins..."), this);
     m_actionAboutPlugins->setMenuRole(QAction::NoRole);
     addToolAction(m_actionAboutPlugins, m_contexts,
                    Core::Id("FormEditor.AboutPlugins"), mformtools);