Fix HTML comment parsing with `-` before closing `-->`#286

Merged

jgm merged 2 commits intocommonmark:masterfrom robinst:issue-285

Mar 6, 2024

+17-1

Commits on Mar 3, 2024

Fix HTML comment parsing with - before closing -->
robinst
committed

Commits on Mar 5, 2024

Add another test
robinst
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