Bump github.com/JohannesKaufmann/html-to-markdown in /ruledocsgen

Bumps [github.com/JohannesKaufmann/html-to-markdown](https://github.com/JohannesKaufmann/html-to-markdown) from 1.3.3 to 1.3.4.
- [Release notes](https://github.com/JohannesKaufmann/html-to-markdown/releases)
- [Commits](JohannesKaufmann/html-to-markdown@v1.3.3...v1.3.4)

---
updated-dependencies:
- dependency-name: github.com/JohannesKaufmann/html-to-markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

ruledocsgen/go.mod

@@ -7,7 +7,7 @@ replace github.com/arduino/arduino-lint => ../
 replace github.com/jandelgado/gcov2lcov => github.com/jandelgado/gcov2lcov v1.0.5 // v1.0.4 causes Dependabot updates to fail due to checksum mismatch (likely a moved tag). This is an unused transitive dependency, so version is irrelevant.
 
 require (
-	github.com/JohannesKaufmann/html-to-markdown v1.3.3
+	github.com/JohannesKaufmann/html-to-markdown v1.3.4
 	github.com/arduino/arduino-lint v0.0.0
 	github.com/arduino/go-paths-helper v1.7.0
 	github.com/olekukonko/tablewriter v0.0.5