Update app.py

app.py

@@ -337,9 +337,9 @@ gr.ChatInterface(
         description=(
             "The assistant can **generate, explain, fix, optimize, document, and test code**. "
             "It can also **execute code**. "
-            "It has access to <b>today tool</b> (get current date), to "
-            "**yfinance download tool** (get stock data), and to "
-            "**tavily search tool** (search web)."
+            "It has access to a <b>today tool</b> (get current date), to a "
+            "**yfinance download tool** (get stock data), and to a "
+            "**tavily search tool** (web search)."
         ),
         clear_btn="Clear",
         retry_btn=None,