The .MD file in the repository is your best bet but Bitbucket (formerly Stash) does not have the kind of built-in wiki like GitHub does. Atlassian has it's own separate wiki instance called Confluence (https://www.atlassian.com/software/confluence/) which can be integrated somehow with Bitbucket.
Announced in this blog, this holiday season we’re celebrating all things CI/CD and between now and the end of 2019 we’ll be showcasing content, use cases, feature announcements and more. One featur...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events