Every team's documentation is a little bit fiction. Not on purpose — the code just keeps moving after the docs are written. The problem is nobody knows which parts are now wrong.

Diff reality against the docs

Paste a doc section or describe what your docs claim, and ask me whether the code still works that way.

"Our docs say the free plan allows 3 projects — is that still enforced?"
"The API guide lists these fields on the user object. Are they all still returned?"
"Does the password reset flow still work the way this help article describes?"

You catch stale docs before customers do, keep your help centre trustworthy, and give your writers a precise list of what to fix instead of a vague "someone should review the docs."