add duration

tests/Feature/TimeTrackerTest.php

@@ -19,7 +19,7 @@ test('user can start a time tracker', function () {
                 'user_id' => $user->id,
                 'name' => $toDo->name,
                 'checked' => false,
-            ]
+            ],
         ]);
 });
 
@@ -41,7 +41,7 @@ test('user can retrieve his current timer', function () {
                 'user_id' => $user->id,
                 'name' => $toDo->name,
                 'checked' => false,
-            ]
+            ],
         ]);
 });