Geo: Improve formatting of can't push to secondary warning message
When pushing to a secondary, I saw:
GitLab: You can't push code to a read-only GitLab instance. Please use the Primary node URL: git@primary.gogitlab.com:root/rouge.git. Documentation: https://docs.gitlab.com/ee/gitlab-geo/using_a_geo_server.html
This could use some line breaks, and perhaps some editing:
GitLab: You can't push code to a read-only GitLab instance.
Please use the primary node URL instead: git@primary.gogitlab.com:root/rouge.git.
For more information: https://docs.gitlab.com/ee/gitlab-geo/using_a_geo_server.html