[French] Involving Users in Evaluating Web Accessibility

[remibetin]

Minor changes.

Original page: https://www.w3.org/WAI/test-evaluate/involving-users/

Contributor: @3l3gant-cod3s

PR opened:

• https://github.com/w3c/wai-InvolveUsersEval/pull/27

Old PR closed (due to branch conflicts)

• https://github.com/w3c/wai-InvolveUsersEval/pull/26

Actions needed:

• [x] Fix conflicts with main branch before merging