fix(docs): add title and aria-label to Bootstrap's licence link i…

…n the footer (#2706)

Co-authored-by: Julien Déramond <[email protected]>

site/layouts/partials/footer.html

@@ -78,7 +78,7 @@ <h3 class="accordion-header footer-heading" id="headingCommunity">
               This documentation is an adaptation made by Orange. Original version designed and built with all the love in the world by the <a href="https://github.com/orgs/twbs/people" target="_blank" rel="noopener">Bootstrap core team</a> with the help of <a href="https://github.com/twbs/bootstrap/graphs/contributors" target="_blank" rel="noopener">their contributors</a>.
             </p>
             <p class="mb-lg-1">
-              Orange modified code licensed <a href="{{ .Site.Params.repo }}/blob/main/LICENSE" target="_blank" rel="license noopener">MIT</a>-&nbsp;just like <a href="https://github.com/twbs/bootstrap/blob/main/LICENSE" target="_blank" rel="license noopener">Bootstrap</a>, docs <a href="https://creativecommons.org/licenses/by/3.0/" target="_blank" rel="license noopener">CC BY 3.0</a>.
+              Orange modified code licensed <a href="{{ .Site.Params.repo }}/blob/main/LICENSE" target="_blank" rel="license noopener">MIT</a>-&nbsp;just like <a href="https://github.com/twbs/bootstrap/blob/main/LICENSE" target="_blank" rel="license noopener" title="Bootstrap's license" aria-label="Bootstrap's license">Bootstrap</a>, docs <a href="https://creativecommons.org/licenses/by/3.0/" target="_blank" rel="license noopener">CC BY 3.0</a>.
             </p>
             <p class="mb-lg-1">Currently v{{ .Site.Params.current_version }}.</p>
             <p class="mb-lg-1">