added unst x together ai notebook (#614)

Co-authored-by: Maria Khalusova <kafooster@gmail.com>

Author: ajay23-uns

examplecode/notebooks.mdx

@@ -6,6 +6,13 @@ description: "Notebooks contain complete working sample code for end-to-end solu
 ---
 
 <CardGroup cols={2}>
+    <Card title="Agentic RAG with LangGraph and Together AI" href="https://colab.research.google.com/drive/16JYOV3JwP2PJpQx-PGFshC64Cf91G7D1?usp=sharing">
+    <br/>
+       Build Agentic RAG with `LangGraph` and `Together AI` and compare the results with Vanilla RAG in pure Python
+    <br/>
+       ``Unstructured API`` ``Workflows`` ``Agents`` ``LangGraph`` ``Together AI`` ``Astra DB``
+    <br/>
+    </Card>
     <Card title="Getting Started with Unstructured API and Snowflake" href="https://colab.research.google.com/drive/1Q7TClKZP7U3d2zLucqJgE-Es7sGD6-bX?usp=sharing">
     <br/>
        Learn how to create data processing workflows with Unstructured API and its Python SDK to preprocess all of your unstructured data from your Azure Blob Storage into your Snowflake Table.