Docs: update/fix external Gitaly documentation
Docs: update external Gitaly and include multiple
Update the Advanced documentation for external Gitaly, and add a paragraph about the use of multiple external Gitaly(s).
Fix the incantation of properties in Gitaly multiple externals example
values file. As discovered in !969 (merged), the location of the []
needs to
be on internal.names:
not on internal: