added DR update API

src/doctors/dto/update-doctors-request.dto.ts

@@ -23,12 +23,12 @@ export class UpdateDoctorsRequestDto {
   @IsUUID()
   @IsNotEmpty({ message: 'Doctor ID must be a valid UUID' })
   @ApiProperty({ example: 'uuid', description: 'Doctor ID' })
-  doctorId?: string;
+  doctorId: string;
 
   @IsUUID()
   @IsNotEmpty({ message: 'User ID must be a valid UUID' })
   @ApiProperty({ example: '2733a326-f4e2-4005-ad18-3b8f67a7613c', description: 'User ID' })
-  userId?: string;
+  userId: string;
 
   @IsOptional()
   @IsString({ message: 'Doctor name must be a string' })