Update dependency markdown-it-anchor to v8.0.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
markdown-it-anchor	8.0.0 -> 8.0.1

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Release Notes

valeriangalliat/markdown-it-anchor

### [`v8.0.1`](https://togithub.com/valeriangalliat/markdown-it-anchor/blob/master/CHANGELOG.md#​801---2021-06-15) [Compare Source](https://togithub.com/valeriangalliat/markdown-it-anchor/compare/v8.0.0...v8.0.1) - Fix permalink option typo in readme (\[[#​91](https://togithub.com/valeriangalliat/markdown-it-anchor/issues/91)])

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