updated user registration warning

app.py

@@ -355,7 +355,7 @@ elif authentication_status is None:
     st.warning('Please enter your username and password')
 
     try:
-        if authenticator.register_user('New User Registration', preauthorization=False):
+        if authenticator.register_user(preauthorization=False):
             st.success('User Registered Successfully! Please log in above.')
     except Exception as e:
         st.error(e)