Update doc to recommend that OAuth access token should have an expiration
Problem to solve
Further details
Coming from: #21745 (comment 611083320) - OAuth access tokens do not have an expiry.
Proposal
For this iteration: Update docs to recommend integrations refresh tokens at some interval
Next iteration (not in scope of this issue):
refresh interval should be hard coded to: 2 hours
(GitLab admin can change this configuration - not through the UI)
Who can address the issue
Other links/references
Edited by Orit Golowinski