Redirect /upgrade to /doc/upgrade#manual
- We've had 2 places to document manual upgrades since 2016, /doc/upgrade then pointing to /upgrade for the actual meat. Having a single place prevents people to jump around needlessly. - Tails Upgrader has been pointing to /doc/upgrade since 2014 and these old versions of Tails will continue to point to it. - We could as well redirect /doc/upgrade/#manual to /upgrade but /doc/upgrade has the advantage of putting both techniques in perspective. - /doc/upgrade (formerly /doc/first_steps/upgrade) is very well indexed by search engines while we prevented /upgrade to be indexed by 'noindex'.
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