Updated notebook notes

Author: msalemor

gen-ai/Assistants/api-in-a-box/sales_assistant/assistant_sales.ipynb

@@ -8,7 +8,7 @@
     "\n",
     "## Objective\n",
     "\n",
-    "This notebook demonstrates the following conversation with an Assistant that has several related files related to sales data. The notebook also demonstrates how to handle multiple user Threads for different users working with the same Assistant.\n",
+    "This notebook demonstrates the following conversation with an Assistant that has several related files related to sales data. The notebook also demonstrates how to handle multiple user Threads.\n",
     "\n",
     "This tutorial uses the following Azure AI services:\n",
     "- Access to Azure OpenAI Service - you can apply for access [here](https://aka.ms/oai/access)\n",