Update app.py

app.py

@@ -69,10 +69,10 @@ css="""
 
 title = """
 <div style="text-align: center;max-width: 700px;">
-    <h1>Chat with PDF • OpenAI</h1>
+    <h1>Chatbot for PDFs - GPT-4</h1>
     <p style="text-align: center;">Upload a .PDF, click the "Load PDF to LangChain" button, <br />
-    when everything is ready, go ahead and start typing your questions <br />
-    This version is set to store chat history, and uses gpt-4 as LLM</p>
+    wait for the Status to show Ready, start typing your questions <br />
+    The app is set to store chat history and is built on GPT-4</p>
 </div>
 """