Update alpha Tor browser download link text

On the new website, the link to the Tor Browser alpha download page is called "Advanced Install Options", which I think is confusing. The first time I clicked on this link I was thinking it was a page to download the stable release in any language/platform and only noticed it was for the alpha after reading the page carefully.

I think a download link like "Download Tor Browser Alpha" or "Download the development version" would be more clear.

Maybe the URL can also be changed from /download/options to /download/alpha.