Bump tar-fs from 2.1.2 to 2.1.3 in /docs (#2853)

Bumps [tar-fs](https://github.com/mafintosh/tar-fs) from 2.1.2 to 2.1.3.
- [Commits](https://github.com/mafintosh/tar-fs/commits)

---
updated-dependencies:
- dependency-name: tar-fs
  dependency-version: 2.1.3
  dependency-type: indirect
...

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Author: dependabot[bot]