src/dtos.md

-## game.dto.ts
-
-### NewGameDTO
+## DTO
 
 `ValidateNested()` and `Type(() => DTO)` is needed for ValidationPipe to validate nested DTOs.
 
 ? in the key's name means, that the key-value pair is optional.
 
+### NewGameDTO
+
 ```typescript
 export class newGameDTO {
   @IsString()