fix: fix pre commit error

Author: fatelei

Doc/library/poplib.rst

@@ -245,7 +245,7 @@ A :class:`POP3` instance has the following methods:
    .. versionadded:: 3.4
 
 
-.. method:: POP3.auth(mechanism, authobject=None, initial_response=None)
+.. method:: POP3.auth(self, mechanism, authobject, *, initial_response_ok=True)
 
    Authenticate using the POP3 ``AUTH`` command as specified in :rfc:`5034`.
 

Lib/poplib.py

@@ -451,7 +451,7 @@ def auth(self, mechanism, authobject, *, initial_response_ok=True):
             if len(cmd.encode('ascii')) + 2 <= 255:
                 self._putcmd(cmd)
             else:
-                self._putcmd(f'AUTH {mech}') 
+                self._putcmd(f'AUTH {mech}')
         else:
             self._putcmd(f'AUTH {mech}')
 
@@ -543,7 +543,7 @@ def stls(self, context=None):
             SSL/TLS session.
             """
             raise error_proto('-ERR TLS session already established')
-        
+
 
     __all__.append("POP3_SSL")