DOC(dev): improve 21_hugo-theme_update-git-submodule.md

Documentation/doc_for-developer/21_hugo-theme_update-git-submodule.md

@@ -16,21 +16,21 @@ git submodule update --remote
 git commit -m "CHORE: update submodule ref"
 ```
 
-> We strongly recommend to follow the following examples
-> for the commit message and the merge request :
->
-> - [commit example](https://gitlab.adullact.net/adullact/faq.adullact.org/-/commit/2623374c462c403447d564e6738050df417789dc)
->   - Add a link to old commit used for theme sub-module before update
->   - Add a link to new commit used for theme sub-module after update
->   - Add BREAKING CHANGE footer with a message for developers:
->     `BREAKING CHANGE: update Git submodule on your local repository`
-> - [Merge request example](https://gitlab.adullact.net/adullact/faq.adullact.org/-/merge_requests/146)
->   - Add a link to old commit used for theme sub-module before update
->   - Add a link to new commit used for theme sub-module after update
->   - Add a message for developers : "To do : after the merge of the MR ..."
->   - Add **breaking-change** label
->
-> This allows a quick verification of change made.
+We **strongly** recommend to follow the following examples
+for the commit message and the merge request :
+
+- [commit example](https://gitlab.adullact.net/adullact/faq.adullact.org/-/commit/2623374c462c403447d564e6738050df417789dc)
+  - Add a link to old commit used for theme sub-module before update
+  - Add a link to new commit used for theme sub-module after update
+  - Add BREAKING CHANGE footer with a message for developers:
+    > `BREAKING CHANGE: update Git submodule on your local repository`
+- [Merge request example](https://gitlab.adullact.net/adullact/faq.adullact.org/-/merge_requests/146)
+  - Add a link to old commit used for theme sub-module before update
+  - Add a link to new commit used for theme sub-module after update
+  - Add a message for developers : "To do : after the merge of the MR ..."
+  - Add **breaking-change** label
+
+This allows a quick verification of change made.
 
 ## To do after the update Git submodule of theme on main repository