SECRET_SMTP_PASSWORD(→ _VERSION) to match format

.env.sample

@@ -8,7 +8,7 @@ LETS_ENCRYPT_ENV=production
 SECRET_DB_PASSWORD_VERSION=v1
 SECRET_DB_ROOT_PASSWORD_VERSION=v1
 SECRET_APP_SECRET_VERSION=v1
-SECRET_SMTP_PASSWORD=v1
+SECRET_SMTP_PASSWORD_VERSION=v1
 
 # Wallabag options, see https://github.com/wallabag/docker
 SYMFONY__ENV__FOSUSER_REGISTRATION=true

compose.yml

@@ -89,7 +89,7 @@ secrets:
     name: ${STACK_NAME}_app_secret_${SECRET_APP_SECRET_VERSION}
   smtp_password:
     external: true
-    name: ${STACK_NAME}_smtp_password_${SECRET_SMTP_PASSWORD}
+    name: ${STACK_NAME}_smtp_password_${SECRET_SMTP_PASSWORD_VERSION}
 
 configs:
   entrypoint: