chore: formatting

compose.smtp.yml

@@ -1,4 +1,6 @@
+---
 version: "3.8"
+
 services:
   app:
     environment:
@@ -7,6 +9,7 @@ services:
       - GITEA_MAILER_USER
     secrets:
       - smtp_password
+
 secrets:
   smtp_password:
     name: ${STACK_NAME}_smtp_password_${SECRET_SMTP_PASSWORD_VERSION}