Pike/android-sync — comment on commit 5c8c5fb89ac04d1baa56c4a02c598c3ec1db7f38
File: sync_strings.dtd.in line 9
By Pike:

I'd love to not have the link in the localizable file, but I guess that's hard as we don't have the DOM afterwards?

Either way, make the link https://support.mozilla.com/kb/add-a-device-to-firefox-sync, so that it goes through SUMO's locale detection.