Fix Markdown checks

[fandreuz]

• Pinpoint ycheeverse/lychee to sha-3a09227-alpine (check GitHub Markdown fragment checks fails lycheeverse/lychee#1729)
• Change the Makefile recipe markdownlint to use a Docker container
• Disable MD024, it seems to be buggy(?)

[...]
CHANGELOG.md:253 MD024/no-duplicate-heading Multiple headings with the same content [Context: "Removed"]
CHANGELOG.md:262 MD024/no-duplicate-heading Multiple headings with the same content [Context: "Added"]
CHANGELOG.md:272 MD024/no-duplicate-heading Multiple headings with the same content [Context: "Maturity"]
[...]

• Disable MD059, the transgressions I see don't look that bad to me:

CONTRIBUTING.md:27:176 MD059/descriptive-link-text Link text should be descriptive [Context: "[here]"]

View meeting notes of previous SIG calls in this [google doc](https://docs.google.com/spreadsheets/d/1SYKfjYhZdm2Wh2Cl6KVQalKg_m4NhTPZqq-8SzEVO6s/edit?gid=0#gid=0) 
as stated [here](https://github.com/open-telemetry/community/?tab=readme-ov-file#governing-bodies) to stay up to date.

[reyang]

Thanks @fandreuz! I see the package.json and package-lock.json being deleted in the PR, is this intentional?

[fandreuz]

Thanks @fandreuz! I see the package.json and package-lock.json being deleted in the PR, is this intentional?

Hi @reyang, that's intentional because the npm dependencies are now embedded in a Docker container rather than being installed on the host. Let me know if that's a problem.