docs: Update chroma docs link for collection reference (#22472)

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- [x] **PR message**: 
- **Description:** Updated dead link referencing chroma docs in Chroma
notebook under vectorstores

docs/docs/integrations/vectorstores/chroma.ipynb

@@ -30,7 +30,7 @@
  "- `.peek`\n",
  "- and `.query` runs the similarity search.\n",
  "\n",
- "View full docs at [docs](https://docs.trychroma.com/reference/Collection). To access these methods directly, you can do `._collection.method()`\n"
+ "View full docs at [docs](https://docs.trychroma.com/reference/py-collection). To access these methods directly, you can do `._collection.method()`\n"
  ]
  },
  {