Update app.py

app.py

@@ -45,7 +45,7 @@ def process_chat(user_text):
         response = client.chat.completions.create(
             model="gpt-4o-mini",
             messages=[
-                {"role": "system", "content": "You are a helpful assistant named Diane specializing in digital art advice."},
+                {"role": "system", "content": "You are a helpful assistant named Diane specializing in digital art advice. Don't use text styling (i.e., bold, italics."},
                 {"role": "user", "content": user_text},
             ],
             stream=True  # Enable streaming