fixed typo

Author: HeidiSteen

Quickstart-RAG/Quickstart-rag.ipynb

@@ -6,7 +6,7 @@
    "source": [
     "# RAG Quickstart for Azure AI Search\n",
     "\n",
-    "This quickstart provides a query for RAG scenarios. It demonstrates an approach for a cht experience using grounding data from a search index on Azure AI Search.\n",
+    "This quickstart provides a query for RAG scenarios. It demonstrates an approach for a chat experience using grounding data from a search index on Azure AI Search.\n",
     "\n",
     "We took a few shortcuts to keep the exercise basic and focused on query definitions:\n",
     "\n",