🛎 reword API token comment
🛎 reword API token comment

After this change: https://github.com/buildkite/buildkite/pull/10259
this comment is no longer correct.
We will prohibit an org being added back to an API access token
in the following situations:
- An organization revokes the token
- The User is removed from an organization

buildkite/docs,buildkite/docs,buildkite/docs,buildkite/docs