chore: doc format

proto/auth/v1/auth.proto

@@ -29,7 +29,7 @@ option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_swagger) = {
 			"If you get `Unauthorized`, this mean that you have not put in your token in the header"
 			"or your token is invalid provided (expired, incorrect hash).\n\n"
 			"The token is configured to expired in 10 days, hard-coding it is also a choice.\n\n\n"
-			"# Third-party application"
+			"# Third-party application\n"
 			"To use Paotooong with third-party application, user should already have Paotooong's account by "
 			"manually registering it. Then the account can be bound by directly storing `access_token` and `ttl` from "
 			"[login](#tag/AuthService/operation/AuthService_Login)."