Update Annotation

curl -X PATCH https://api.getmatter.com/public/v1/annotations/ann_m2k8v \
  -H "Authorization: Bearer mat_your_token_here" \
  -H "Content-Type: application/json" \
  -d '{"note": "Core thesis of the essay"}'

{
  "object": "annotation",
  "id": "ann_m2k8v",
  "item_id": "itm_r9f3a",
  "text": "The way to figure out what to work on is by working.",
  "note": "Core thesis of the essay",
  "created_at": "2026-03-30T18:32:00Z",
  "updated_at": "2026-03-30T20:45:00Z"
}