Fixed links (#1485)

* Update CHROMA_SETUP.md

* Update ASTRA_SETUP.md

server/utils/vectorDbProviders/astra/ASTRA_SETUP.md

@@ -10,7 +10,7 @@
 
 **Instructions**
 
-- [Create an Astra account or sign in to an existing Astra account](astra.datastax.com)
+- [Create an Astra account or sign in to an existing Astra account](https://astra.datastax.com)
 - Create an Astra Serverless(Vector) Database.
 - Make sure DB is in active state.
 - Get `API ENDPOINT`and `Application Token` from Overview screen

server/utils/vectorDbProviders/chroma/CHROMA_SETUP.md

 # How to setup a local (or remote) Chroma Vector Database
 
-[Official Chroma Docs](https://docs.trychroma.com/usage-guide#running-chroma-in-clientserver-mode) for reference.
+[Official Chroma Docs](https://docs.trychroma.com/guides#running-chroma-in-clientserver-mode) for reference.
 
 ### How to get started