Make clearer what versions get instance reviews

GitLab Core, both FOSS as well as unlicensed EE, can get instance
reviews.

doc/administration/instance_review.md

@@ -4,15 +4,15 @@ group: Conversion
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
-# Instance Review **(CORE ONLY)**
+# Instance Review
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/6995) in [GitLab Core](https://about.gitlab.com/pricing/) 11.3.
 
-If you are running a medium size instance (50+ users) of
-[GitLab Core](https://about.gitlab.com/pricing/) edition, you are qualified for a
-free Instance Review.
+If you run a medium-sized self-managed instance (50+ users) of a free version of GitLab,
+[either Community Edition or unlicensed Enterprise Edition](https://about.gitlab.com/install/ce-or-ee/),
+you qualify for a free Instance Review.
 
-1. Sign in as a user with Admin [permissions](../user/permissions.md).
+1. Sign in as a user with administrator [permissions](../user/permissions.md).
 1. In the top menu, click your user icon, and select
    **Get a free instance review**: