Fix dead links at managing-reviewers.md

[tuminoid]

| FILE: ./processes/managing-reviewers.md
| [✖] ../maintainers#revoking-approval-access
| 
| 3 links checked.
| 
| ERROR: 1 dead links found!
| [✖] ../maintainers#revoking-approval-access → Status: 400

/triage accepted
/help
/good-first-issue

Split from #328

[metal3-io-bot]

@tuminoid:
This request has been marked as suitable for new contributors.

Please ensure the request meets the requirements listed here.

If this request no longer meets these requirements, the label can be removed
by commenting with the /remove-good-first-issue command.

In response to this:

| FILE: ./processes/managing-reviewers.md
| [✖] ../maintainers#revoking-approval-access
| 
| 3 links checked.
| 
| ERROR: 1 dead links found!
| [✖] ../maintainers#revoking-approval-access → Status: 400

/triage accepted
/help
/good-first-issue

Split from #328

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[tuminoid]

/assign aditya7302

[metal3-io-bot]

@tuminoid: GitHub didn't allow me to assign the following users: aditya7302.

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In response to this:

/assign aditya7302

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.