feat(migration): little improvement on migration guide

docs/setup/migration/1.14-to-1.15.md

@@ -43,15 +43,15 @@ available [here](https://github.com/orgs/RegardsOss/packages/container/package/r
 - Inside your inventory file `group_vars/regards_nodes/main.yml`, add `group_docker_static_files_migrated` property:
 
 ```yaml
-[...]
+[ ... ]
 group_docker_registry: ghcr.io/regardsoss
 
 # Files needs to be moved from ./files/ to ../../static/
 # using $ mv ./files ../../static
 group_docker_static_files_migrated: False
 
 group_docker_tags:
-[...]
+  [ ... ]
 ```
 
 :::info
@@ -291,7 +291,8 @@ rm -f /var/lib/rabbitmq/mnesia/migration-to-1.15.sh
 
 ## Migrating from 1.15.1 to 1.15.2
 
-If you have installed the 1.15.1 version and want to upgrade to 1.15.X, some microservice won't boot.
+If you have installed the 1.15.1 version and want to upgrade to 1.15.X, some microservices **won't boot with flyway
+issues**.
 
 - You need to add the following property inside your inventory file `group_vars/regards_nodes/main.yml`: