docs: fixed instances of typo in 'overridden'

This affects several files beyond those mentioned in the bug.

I didn't fix some instances because the files had code
problems that blocked presubmit checks.

Test: make ds-docs

Bug: 37094741

Change-Id: I642f0384fef2b267ebc970bae1b4fb90bae667e7
Exempt-From-Owner-Approval: Docs-only change