Update app.py

app.py

@@ -78,7 +78,7 @@ openai.api_key = os.getenv("OPENAI_API_KEY")
 
 with gr.Blocks() as demo:
     
-    gr.Markdown('<h2 style="color:blue; font-size:20px; text-align: center; justify-content: center; font-weight:bold;">Q&A bot for PDF docs. Upload your document, press the button, and wait for confirmation of success</h2>')
+    gr.Markdown('<h1 style="color:blue; font-size:20px; text-align: center; justify-content: center; font-weight:bold;">Q&A bot for PDF docs. Upload your document, press the button, and wait for confirmation of success</h1>')
     
     with gr.Tab('Input PDF document here'):
         text_input = gr.File()