fix after review

server/src/modules/repair-order/dto/update-repair-order.dto.ts

@@ -1,14 +1,14 @@
 export class UpdateRepairOrderDto {
-  id?: string | null;
-  number?: string | null;
-  equipmentId?: string | null;
-  repairKind?: string | null;
-  status?: string | null;
-  plannedAt?: string | null;
-  startedAt?: string | null;
-  completedAt?: string | null;
-  contractor?: string | null;
-  engineHoursAtRepair?: string | null;
-  description?: string | null;
-  notes?: string | null;
+  id?: string;
+  number?: string;
+  equipmentId?: string;
+  repairKind?: string;
+  status?: string;
+  plannedAt?: string;
+  startedAt?: string;
+  completedAt?: string;
+  contractor?: string;
+  engineHoursAtRepair?: string;
+  description?: string;
+  notes?: string;
 }