As a preparation to add documentation for commit signature verification,
let's move the old Gitolite documentation to howto/gitolite so we can
add howto/git with new doc.

refs #42099

service/static-shim.md

@@ -237,7 +237,7 @@ previous static source:
 
     ssh staticiforme.torproject.org rm -rf /srv/research.torproject.org/
 
-Typically, you will also want to [archive the git repository](howto/git#archiving-a-repository) if
+Typically, you will also want to [archive the git repository](howto/gitolite#archiving-a-repository) if
 it hasn't already been [migrated to GitLab](howto/gitlab#how-to-migrate-a-git-repository-from-legacy-to-gitlab).
 
 ## Building a Hugo site