git.sr.ht: update recommended nginx configuration

The previous version would match any URL ending in HEAD et al, which
would cause web breakage if your repo had any files named HEAD.

Billing FAQ: update development link

git.sr.ht: simplify explanation of push -o debug

git.sr.ht: simplify docs

It's not necessary to document the web UI in exhaustive detail.

git.sr.ht: document push options

git.sr.ht API: OAuth scope for file uploads

git.sr.ht API: document file artifacts

Improve git.sr.ht artifacts docs

Add docs for attaching binaries to tags

Update alpine repository information

Update the alpine version number, and add a note informing that the
community repository must be enabled.

Signed-off-by: Benjamin Lowry <ben@ben.gmbh>

builds/manifest: Make clear that tasks with dashes are supported

Fix broken link to the "SSH access to build VMs" page

builds installation: How to configure ssh access

installation: Mention both migrate steps

Clarify meaning of GPL/AGPL

Signed-off-by: Benjamin Lowry <ben@ben.gmbh>

Add note about limited list of GitHub repos

Drop ubuntu/disco; EoL'd upstream

license.md: make more consistent the layout of links

license.md: make consistent the layout of links

license.md: attribute GPL to the FSF

You can stop bothering me about this now