Ajout de ponctuation dans certains textes

Pull request checklist

Please check if your PR fulfills the following requirements:

[x] You can build successfully the whole project with your changes locally
[x] You use the coding conventions and the naming conventions of the project
[x] You use tabs for indentation
[x] You make sure that your PR is not a duplicate
[x] This PR is ready to be reviewed and merged
[x] This PR merges into the development branch or in the specific branch of the feature you want to merge into
[x] There is no TODO in the code
[x] There is no spelling or grammatical errors in the code
[x] Details of the issue or feature are documented below
[x] This PR is not a breaking change (e.g. changes that would cause existing functionality to change)

Français `fr`
Harmonisation des bandeaux Pas de point au titre mais un point sur l'explication du bandeau

Before merging this PR, you will need the approval of at least one of the following people:

So be patient ;)