Postgres provider udpates (openai#256)

The text in the postgres section specifically called out supabase, but pgvector is available on many vendors

this points directly to the pgvector repo so that users can choose

README.md

@@ -336,7 +336,7 @@ For detailed setup instructions, refer to [`/docs/providers/llama/setup.md`](/do
 
 #### Postgres
 
-[Postgres](https://www.postgresql.org) offers an easy and efficient way to store vectors via [pgvector](https://github.com/pgvector/pgvector) extension. To use pgvector, you will need to set up a PostgreSQL database with the pgvector extension enabled. For example, you can [use docker](https://www.docker.com/blog/how-to-use-the-postgres-docker-official-image/) to run locally. For a hosted/managed solution, you may try [Supabase](https://supabase.com/) or any other cloud provider with support for pgvector. For detailed setup instructions, refer to [`/docs/providers/postgres/setup.md`](/docs/providers/postgres/setup.md).
+[Postgres](https://www.postgresql.org) offers an easy and efficient way to store vectors via [pgvector](https://github.com/pgvector/pgvector) extension. To use pgvector, you will need to set up a PostgreSQL database with the pgvector extension enabled. For example, you can [use docker](https://www.docker.com/blog/how-to-use-the-postgres-docker-official-image/) to run locally. For a hosted/managed solution, you can use any of the cloud vendors which support [pgvector](https://github.com/pgvector/pgvector#hosted-postgres). For detailed setup instructions, refer to [`/docs/providers/postgres/setup.md`](/docs/providers/postgres/setup.md).
 
 ### Running the API locally