Docs feedback: Update GitLab Licensing verbiage

Link: https://docs.gitlab.com/ee/development/licensing.html

Currently reads:

GitLab Community Edition (CE) is licensed under the terms of the MIT License. GitLab Enterprise Edition (EE) is licensed under “The GitLab Enterprise Edition (EE) license” wherein there are more restrictions.

Since the single code base migration, I'm guessing this language needs to be updated!