move the about directory into the docs to avoid collision with the multiple versions of our hosted docs

docs/4.0/about/translations.md

@@ -0,0 +1,18 @@
+---
+layout: docs
+title: Translations
+description: Links to community-translated Bootstrap documentation sites.
+group: about
+---
+
+Community members have translated Bootstrap's documentation into various languages. None are officially supported and they may not always be up to date.
+
+<ul>
+{% for language in site.data.translations %}
+  <li><a href="{{ language.url }}" hreflang="{{ language.code }}">{{ language.description }} ({{ language.name }})</a></li>
+{% endfor %}
+</ul>
+
+**We don't help organize or host translations, we just link to them.**
+
+Finished a new or better translation? Open a pull request to add it to our list.