build: Bump wheel from 0.37.1 to 0.38.1 in /docs (#100)

Bumps [wheel](https://github.com/pypa/wheel) from 0.37.1 to 0.38.1.
- [Release notes](https://github.com/pypa/wheel/releases)
- [Changelog](https://github.com/pypa/wheel/blob/main/docs/news.rst)
- [Commits](pypa/wheel@0.37.1...0.38.1)

---
updated-dependencies:
- dependency-name: wheel
  dependency-type: indirect
...

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Signed-off-by: dependabot[bot] <support@github.com>
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Author: dependabot[bot]

docs/requirements.txt

@@ -93,7 +93,7 @@ tornado==6.1
     # via livereload
 urllib3==1.26.8
     # via requests
-wheel==0.37.1
+wheel==0.38.1
     # via pip-tools
 zope-interface==5.4.0
     # via datetime