update image and link

Author: tylerhutcherson

assets/role-based-rag.png

@@ -15,7 +15,7 @@
         "2. Knowledge base **Documents** in Redis are tagged with the official roles that can access them (`allowed_roles`).\n",
         "3. A unified **query flow** ensures a user only sees documents that match at least one of their roles.\n",
         "\n",
-        "![image-3.png](../../assets/role-based-rag.png)"
+        "![Role Based RAG](https://raw.githubusercontent.com/redis-developer/redis-ai-resources/main/assets/role-based-rag.png)"
       ]
     },
     {
@@ -76,6 +76,7 @@
         "1. **User Creation & Role Management**\n",
         "   - A user is stored at `user:{user_id}` in Redis with a JSON structure containing the user’s roles.\n",
         "   - We can create, update, or delete users as needed.\n",
+        "   - **This serves as a simple look up layer and should NOT replace your production-ready auth API flow**\n",
         "\n",
         "2. **Document Storage**\n",
         "   - Documents chunks are stored at `doc:{doc_id}:{chunk_id}` in Redis as JSON.\n",