Previously, we used brackets to denote the tier badges, but this made Kramdown, the docs site Markdown renderer, show many warnings when building the site. This is now fixed by using parentheses instead of square brackets. This was caused by [PREMIUM] looking like a link to Kramdown, which couldn't find a URL there. See: - https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/484 - https://gitlab.com/gitlab-org/gitlab-ce/issues/63800
- Document how to properly configure `GITLAB_LICENSE_FILE` environment variable in source and omnibus installations. Resolves: https://gitlab.com/gitlab-org/gitlab-ee/issues/10808 Signed-off-by: Robert Marshall <rmarshall@gitlab.com>
