Bilingual Mothership ribbons (Fr and En) #9

Suggestion for both languages. Since the language of page has been globally in html tag and that link to flip language is in another that one. We should add a lang and hreflang attributes to the a.

in https://github.com/nsgov/patternlibrary/blob/main/navigation/mothership-ribbon-with-EN.html change
<a href="../" style="float: right; color: #fff; font-weight: bold; margin: 10px 0; text-decoration: none;">English</a>
to
<a href="../" hreflang="en" lang="en" style="float: right; color: #fff; font-weight: bold; margin: 10px 0; text-decoration: none;">English</a>

in https://github.com/nsgov/patternlibrary/blob/main/navigation/mothership-ribbon-with-FR.html change
<a href="/fr" style="float: right; color: #fff; font-weight: bold; margin: 10px 0; text-decoration: none;">Français</a>
to
<a href="/fr" hreflang="fr" lang="fr" style="float: right; color: #fff; font-weight: bold; margin: 10px 0; text-decoration: none;">Français</a>