[docs] Could you provide some documentation on writing regular expressions for automated notifications?

[SWHL]

Platform

Desktop - Web

Describe the bug

I wrote some regular expressions following the rules below, but I found they aren't very useful. Example:

This is how I write the regular expression: (car|bottle|people)

I hope to have a more comprehensive documentation. The only relevant document I have found is this one:
https://github.com/RSSNext/Folo/wiki/Actions

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Relevant Information

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Reproduction Video

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Environment

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Validations

• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• This issue is valid

Contributions

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests (actually just go ahead and do it, thanks!)