UI: Use 64bit desktop link by default in installer

UI/installer/mp-installer.nsi

@@ -224,7 +224,11 @@ Section "OBS Studio" SecCore
 	${endif}
 
 	SetOutPath "$INSTDIR\bin\32bit"
-	CreateShortCut "$DESKTOP\OBS Studio.lnk" "$INSTDIR\bin\32bit\obs32.exe"
+	${if} ${RunningX64}
+		CreateShortCut "$DESKTOP\OBS Studio.lnk" "$INSTDIR\bin\64bit\obs64.exe"
+	${else}
+		CreateShortCut "$DESKTOP\OBS Studio.lnk" "$INSTDIR\bin\32bit\obs32.exe"
+	${endif}
 	CreateDirectory "$SMPROGRAMS\OBS Studio"
 	CreateShortCut "$SMPROGRAMS\OBS Studio\OBS Studio (32bit).lnk" "$INSTDIR\bin\32bit\obs32.exe"
 	CreateShortCut "$SMPROGRAMS\OBS Studio\Uninstall.lnk" "$INSTDIR\uninstall.exe"