Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

The current magic comment syntax for highlighting is great but it doesn't have support for Lua's comment style.
Lua uses -- for short single line comments. Right now I resort to using to using the C/Python comment styles as a workaround but this makes copy/pasting/testing the code snippets a pain since I need to keep removing these invalid lines.

Reproducible demo

No response

Steps to reproduce

• Use lua language in CodeBlock
• use magic comments to highlight regions of code

Expected behavior

Expected -- highlight-start and -- highlight-end to work in lua but it does not.

Actual behavior

Does not work

Your environment

No response

Self-service

• I'd be willing to fix this bug myself.