docs: Fix typo in `EXTRACTION.md` (#55106)

Self-Review Checklist:

- [X] I've reviewed my own diff for quality, security, and reliability
- [X] Unsafe blocks (if any) have justifying comments
- [X] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [X] Tests cover the new/changed behavior
- [X] Performance impact has been considered and is acceptable

Release Notes:

- Corrected a typo in the instructions regarding the 'pattern' format
3db5c398a2vladislav doster committed on 4/28/2026, 7:18:44 PM· committed by GitHubparent4e636bf
1 file changedLine totals unavailable