Update tutorials/how-to-implement-rag/index.mdx

Co-authored-by: Rémy Léone <[email protected]>

Author: Laure-di

tutorials/how-to-implement-rag/index.mdx

@@ -77,7 +77,7 @@ To perform these actions, you'll need to connect to your PostgreSQL database. Yo
 
 ### Step 2: Install the pgvector Extension
 
-pgvector is essential for storing and indexing high-dimensional vectors, which are critical for retrieval-augmented generation (RAG) systems. Ensure that it is installed by executing the following SQL command:
+[pgvector](https://github.com/pgvector/pgvector) is essential for storing and indexing high-dimensional vectors, which are critical for retrieval-augmented generation (RAG) systems. Ensure that it is installed by executing the following SQL command:
 
 ```sql
    CREATE EXTENSION IF NOT EXISTS vector;