[qt] Update FAQ links (#3710)

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3710
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Ghost <>
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/yuzu/main_window.h

@@ -336,8 +336,7 @@ private slots:
     void OnPrepareForSleep(bool prepare_sleep);
     void OnMenuReportCompatibility();
     void OnOpenModsPage();
-    void OnOpenQuickstartGuide();
-    void OnOpenFAQ();
+    void OnOpenUserHandbook();
 
     /// Called whenever a user selects a game in the game list widget.
     void OnGameListLoadFile(QString game_path, u64 program_id);