ClangFormat: Add missing override

Change-Id: I8ed5918471935d21ae7036081cc45d6430c295d2
Reviewed-by: Artem Sokolovskii <artem.sokolovskii@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/clangformat/clangformatplugin.cpp

@@ -76,7 +76,7 @@ public:
     }
 
     TextEditor::CodeStyleEditorWidget *createAdditionalGlobalSettings(
-        ProjectExplorer::Project *project, QWidget *parent)
+        ProjectExplorer::Project *project, QWidget *parent) override
     {
         return new ClangFormatGlobalConfigWidget(project, parent);
     }