made auto phpcbf changes; added some documentation

views/dashboard.php

@@ -9,9 +9,10 @@ if (!isset($_SESSION['user_id'])) {
     exit;
 }
 
-$content = function() { /* use ($bills) if fetching bills from the database */ 
+$content = function () {
+    /* use ($bills) if fetching bills from the database */ 
 
-?>
+    ?>
     <div class="row justify-content-center">
         <div class="col-md-8">
             <h2 class="mt-5">Dashboard</h2>
@@ -71,4 +72,4 @@ $content = function() { /* use ($bills) if fetching bills from the database */
     </div>
 <?php };
 
-include __DIR__ . '/layouts/app.php';
+require __DIR__ . '/layouts/app.php';