Update gh-pages with new EBNF

[github-actions]

Automated changes by create-pull-request GitHub action

[coderabbitai]

Important

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To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

• 🔍 Trigger a full review

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}