docs: add Weaviate RAG recipe notebook (#451)

Signed-off-by: Panos Vagenas <35837085+vagenas@users.noreply.github.com>
Co-authored-by: Panos Vagenas <35837085+vagenas@users.noreply.github.com>

mkdocs.yml

@@ -82,6 +82,7 @@ nav:
       - "RAG with Haystack": examples/rag_haystack.ipynb
       - "RAG with LlamaIndex 🦙": examples/rag_llamaindex.ipynb
       - "RAG with LangChain 🦜🔗": examples/rag_langchain.ipynb
+      - "RAG with Weaviate": examples/rag_weaviate.ipynb
       - "Hybrid RAG with Qdrant": examples/hybrid_rag_qdrant.ipynb
   - Integrations:
     - Integrations: integrations/index.md