Removed whitespace

backend/internal/dto/validations.go

@@ -80,11 +80,11 @@ func ValidateCallbackURL(raw string) bool {
 // Empty responseMode is allowed (field not provided, use default)
 func ValidateResponseMode(responseMode string) bool {
 	switch responseMode {
-	case  "form_post", "query":
+	case "form_post", "query":
 		return true
 	case "":
 		return true
 	default:
 		return false
 	}
-}
+}