Apply Laravel coding style

Shift automatically applies the Laravel coding style - which uses the PSR-12 coding style as a base with some minor additions.

You may customize the code style applied by configuring [Pint](https://laravel.com/docs/pint), [PHP CS Fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer), or [PHP CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer) for your project root.

For more information on customizing the code style applied by Shift, [watch this short video](https://laravelshift.com/videos/shift-code-style).

app/Http/Middleware/IsInstalled.php

@@ -9,14 +9,13 @@ class IsInstalled
     /**
      * Handle an incoming request.
      *
-     * @param \Illuminate\Http\Request $request
-     * @param \Closure                 $next
-     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
      * @return mixed
      */
     public function handle($request, Closure $next)
     {
-        if (!isInstall()) {
+        if (! isInstall()) {
             return $next($request);
         } else {
             if ($request->isJson()) {