Markdown lint

Create CR-GT-13.md #18

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10 errors and 1 warning

Lists should be surrounded by blank lines [Context: "- Qui fait quoi dans le référe..."]

Lists should be surrounded by blank lines [Context: "- Contributions certifiantes :..."]

Unordered list indentation [Expected: 2; Actual: 4]

Trailing spaces [Expected: 0 or 2; Actual: 1]

Unordered list indentation [Expected: 2; Actual: 4]

Headings should be surrounded by blank lines [Expected: 1; Actual: 0; Below] [Context: "## Questions générales :"]

Trailing punctuation in heading [Punctuation: ' :']

Lists should be surrounded by blank lines [Context: "- Contribution certifiante : U..."]

Unordered list indentation [Expected: 2; Actual: 4]

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/