[keycloak-dev] DOCS: change to Auth Services /topics file structure

Hello Keycloakers and Red Hatters. I'm Tana, good to meet you all, virtually! :-) As I am new to Red Hat and to the Keycloak community, here's a bit more background about me, hopefully nothing too shocking: https://github.com/tanberry and https://twitter.com/tanamarieberry. This is a quick heads up to our community and developers that we plan to merge PR #184 <https://github.com/keycloak/keycloak-documentation/pull/184> this week, probably Wednesday or Thursday. This merge will convert the Authorization Services Guide to a flat file structure, meaning all topics for this book will be in a single dir, and not nested into separate directories or "chapters". We plan to convert only this one book for 3.x/7.2, and use it as a POC, because we want to keep changes to a minimum for 7.2. In RH-SSO 7.3 release we will convert the remaining books. There are several reason for changing to a flat-file structure (visual findability in dirs, flexibility when new topics are added or existing topics are moved, to have unique file names, enhanced SEO...). Please let us know if you have any questions, concerns, or comments; we want your feedback! Thanks, and I look forward to working with the Keycloak/SSO team! tana