Fix link to translate.sugarlabs.org

On some browsers without automatic https uplift, the link would fail
because the site is not listening on http; connection refused.

Reported-by: Walter Bender

_includes/footer.html

@@ -56,7 +56,7 @@ <h4 class="footerHeaderStyle align-center-md"><b>Development</b></h4>
                             <li class="footerListStyle"><a href="https://help.sugarlabs.org/en/">Documentation</a></li>
                             <li class="footerListStyle"><a href="https://matrix.to/#/#sugar:matrix.org">Chat with us on Matrix</a></li>
                             <li class="footerListStyle"><a href="https://wiki.sugarlabs.org/go/Development_Team/Source_Code">Development code</a></li>
-                            <li class="footerListStyle"><a href="http://translate.sugarlabs.org">Translation Platform</a></li>
+                            <li class="footerListStyle"><a href="https://translate.sugarlabs.org">Translation Platform</a></li>
                             <li class="footerListStyle"><a href="https://wiki.sugarlabs.org/">Sugar Labs Wiki</a></li>
 			    <li class="footerListStyle"><a href="{{ site.baseurl }}/profiles">Contributor Profiles</a></li>
                           </ul>

develop.html

@@ -101,7 +101,7 @@ <h2>IMPORTANT LINKS FOR DEVELOPERS</h2>
 			                <li><a href="https://matrix.to/#/#sugar:matrix.org"><object type="image/svg+xml" data="/assets/ion-icons/chatbubble-ellipses.svg" width="16" height="16"></object>&nbsp;Chat with us on Matrix</a></li>
 			                <li><a href="https://github.com/sugarlabs/sugar-docs/blob/master/README.md/"><object type="image/svg+xml" data="/assets/ion-icons/book.svg" width="16" height="16"></object>&nbsp;Developer guide</a></li>
                             <li><a href="https://wiki.sugarlabs.org/go/Mailing_Lists"><object type="image/svg+xml" data="/assets/ion-icons/mail.svg" width="16" height="16"></object>&nbsp;Mailing lists (old-school, but still active and useful)</a></li>
-                            <li><a href="http://translate.sugarlabs.org/"><object type="image/svg+xml" data="/assets/ion-icons/language.svg" width="16" height="16"></object>&nbsp;Contribute to translations</a></li>
+                            <li><a href="https://translate.sugarlabs.org/"><object type="image/svg+xml" data="/assets/ion-icons/language.svg" width="16" height="16"></object>&nbsp;Contribute to translations</a></li>
                             <li><a href="https://github.com/sugarlabs/sugar-docs/blob/master/README.md"><object type="image/svg+xml" data="/assets/ion-icons/code.svg" width="16" height="16"></object>&nbsp;Related projects</a></li><!--What is this?-->
                             <li><a href="{{ site.baseurl }}/profiles"><object type="image/svg+xml" data="/assets/ion-icons/person.svg" width="16" height="16"></object>&nbsp;Who are the developers of Sugar Labs?</a></li>
                             <li><a href="https://github.com/sugarlabs/sugar-docs/blob/master/src/CODE_OF_CONDUCT.md"><object type="image/svg+xml" data="/assets/ion-icons/people.svg" width="16" height="16"></object>&nbsp;Code of Conduct</a></li>

try.html

@@ -57,7 +57,7 @@ <h2>IMPORTANT LINKS FOR DEVELOPERS</h2>
 			    <li><a href="https://matrix.to/#/#sugar:matrix.org">Chat with us on Matrix</a></li>
 			    <li><a href="https://github.com/sugarlabs/sugar-docs/blob/master/README.md/">Developer guide</a></li>
                             <li><a href="https://wiki.sugarlabs.org/go/Mailing_Lists">Mailing lists (old-school, but still active and useful)</a></li>
-                            <li><a href="http://translate.sugarlabs.org/">Contribute to translations</a></li>
+                            <li><a href="https://translate.sugarlabs.org/">Contribute to translations</a></li>
 			    <li><a href="https://github.com/sugarlabs/sugar-docs/blob/master/README.md">Related projects</a></li><!--What is this?-->
 			    <li><a href="{{ site.baseurl }}/profiles">Who are the developers of Sugar Labs?</a></li>
 			    <li><a href="">Code of Conduct</a></li>