Update rpi_docker_monitor.md

docs/rpi_docker_monitor.md

@@ -124,8 +124,9 @@ GF_SECURITY_ADMIN_PASSWORD=changeme
 GF_USERS_ALLOW_SIGN_UP=false
 ```
 
-##Default Login Inforamtion
-User: Admin
+### Default Login Inforamtion
+
+User: Admin <br>
 Password: Admin
 
 ### Setup Prometheus as the default data source.