git-gitlab-push: Document options on multiple lines in usage
git-gitlab-push: Document options on multiple lines in usage

This will allow a longer total set of options without long lines.

kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix,kaspermarstal/SimpleElastix