Improve grammatical structure in GitLab flow introduction
In the GitLab flow introduction, the conditional sub-clause in the following sentence appears to be incorrectly using the conditional tense:
If you would have squashed all the commits into one (…)
Proposed change:
If you had squashed all the commits into one (…)
See https://docs.gitlab.com/ee/workflow/gitlab_flow.html#squashing-commits-with-rebase.