Update function name (1/2)

src/yuzu/main.h

@@ -182,7 +182,7 @@ private slots:
     void OnStopGame();
     void OnMenuReportCompatibility();
     void OnOpenModsPage();
-    void OnQuickstartGuide();
+    void OnOpenQuickstartGuide();
     void OnFAQ();
     /// Called whenever a user selects a game in the game list widget.
     void OnGameListLoadFile(QString game_path);