fix namespace and use spelling mistake

apps/backend/app/Http/Controllers/TasksController.php

@@ -1,19 +1,19 @@
 <?php
 
-namespace app\Http\Controllers;
+namespace App\Http\Controllers;
 
-use app\Mail\TaskDateUpdateMail;
-use app\Mail\TaskParticipationCancelledMail;
-use app\Mail\VolunteerAssignToTaskMail;
-use app\Mail\VolunteerUnassignToTaskMail;
-use app\Models\Event;
-use app\Models\Task;
-use app\Models\User;
-use app\Notifications\TaskDateUpdated;
-use app\Notifications\TaskDeleted;
-use app\Notifications\VolunteerAssignedToTask;
-use app\Notifications\VolunteerUnassignedFromTask;
-use app\Services\FormatDate;
+use App\Mail\TaskDateUpdateMail;
+use App\Mail\TaskParticipationCancelledMail;
+use App\Mail\VolunteerAssignToTaskMail;
+use App\Mail\VolunteerUnassignToTaskMail;
+use App\Models\Event;
+use App\Models\Task;
+use App\Models\User;
+use App\Notifications\TaskDateUpdated;
+use App\Notifications\TaskDeleted;
+use App\Notifications\VolunteerAssignedToTask;
+use App\Notifications\VolunteerUnassignedFromTask;
+use App\Services\FormatDate;
 use Carbon\Carbon;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;