Weirdly, my previous comment about this (and I think rob's too) has disappeared. 
I think this regex is weak. It might work for our particular versions we have for Firefox today but suppose we use unexpected version numbering like "76" or "10b" or something like that. For example, who knows how the versioning will look like for B2G in a year?!

I jotted down a pattern using `$('#gcc-main-title').data('template')` that meant you could fix it entirely without having to use regexes.