remove broken link

Author: ramsrib

fern/knowledge-base/knowledge-base.mdx

@@ -115,7 +115,5 @@ By following these guidelines, you can create a comprehensive Knowledge Base tha
 
 <Info>
   Currently, Vapi's Knowledge Base functionality supports Google as a provider
-  with the gemini-1.5-flash model for knowledge retrieval. For the most
-  up-to-date information on supported providers and models, please refer to our
-  [API documentation](/api-reference/knowledge-bases/create-knowledge-base).
+  with the gemini-1.5-flash model for knowledge retrieval.
 </Info>