docs: Add new text finder (#60189)

Mention the text finder in the docs. 

Release Notes:

- N/A

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Co-authored-by: zed-zippy[bot] <234243425+zed-zippy[bot]@users.noreply.github.com>
5a823cf70eYara 🏳️‍⚧️ committed on 7/3/2026, 6:46:05 PM· committed by GitHubparentfa8540f
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