Remove stray blank lines and start every stack with ---

content/en/3.serveex/8.development/3.it-tools.md

@@ -30,7 +30,6 @@ services:
     restart: unless-stopped
     image: corentinth/it-tools:latest
     ports:
-
       - 3222:80
 ```
 
@@ -65,6 +64,7 @@ __Pre-requisite:__ We assume you’ve created a subdomain like `tools.yourdomain
 In Dockge, go to the SWAG stack and edit the compose file to add the IT Tools network:
 
 ```yaml [compose.yaml]
+---
 services:
   swag:
      container_name: # ...