* docs: add Reap as HyperFrames adopter
Reap (reap.video) is integrating HyperFrames as a renderer for lightweight
video edits and renders in its AI-driven video processing pipeline for
social content creation.
* docs: refine reap adopter entry and add to docs site
- ADOPTERS.md: rename "Reap" -> "reap" to match brand casing, and
update the use-case sentence to describe HyperFrames' role inside
reap (matches the HeyGen/tldraw convention on this page).
- docs/community/adopters.mdx: add reap card to the Production
CardGroup so the hosted adopters page at
hyperframes.heygen.com/community/adopters mirrors ADOPTERS.md.
Addresses review feedback from @miguel-heygen on #876.
