Update app.py

app.py

@@ -293,7 +293,7 @@ def convert_speech_to_math(text):
         (r'tangent of\s+(.+)', r'tan(\1)'),
         (r'derivative of\s+(.+)', r'diff(\1, x)'),
         (r'integral of\s+(.+)', r'integrate(\1, x)'),
-        (r'factorial of\s+(\d+)', r'factorial(\d+)\)'), # Corrected pattern for factorial
+        (r'factorial of\s+(\d+)', r'factorial\((\d+)\)'), # Corrected pattern for factorial
     ]
 
     for pattern, replacement in patterns: