Replace single with double quotes (#444)

src/features/startup/startupDialog.tsx

@@ -56,7 +56,7 @@ const StartupDialog = () => {
                 className="mt-3"
                 onClick={() => dispatch(setShowStartupDialog(true))}
             >
-                Open 'How to use'
+                Open "How to use"
             </Button>
         );
     }