Update llama-index.md

Updated URL for Llama Index's Chroma DB Page

Author: satyamdalai

docs/integrations/llama-index.md

@@ -7,7 +7,7 @@ title: 🦙 LlamaIndex
 
 > _formerly known as GPT-index_
 
-- `LlamaIndex` [Vector Store page](https://gpt-index.readthedocs.io/en/latest/how_to/integrations/vector_stores.html)
+- `LlamaIndex` [Vector Store page](https://docs.llamaindex.ai/en/stable/examples/vector_stores/ChromaIndexDemo.html)
 - Demo: https://github.com/jerryjliu/llama_index/blob/main/docs/examples/vector_stores/ChromaIndexDemo.ipynb
 - [Chroma Loader on Llamahub](https://llamahub.ai/l/chroma)