The source project of this merge request has been removed.
Add a note that webhooks are not a general job triggering mechanism. See…
Created in response to https://gitlab.com/gitlab-org/gitlab-ce/issues/40382#note_122221118.
I requested that the documentation about webhooks make it more clear that they can't be used to trigger CI jobs from outside GitLab, which seems to be a common misunderstanding. I was asked to contribute a change to the documentation.