Update the docstring too. :-)

Lib/ftplib.py

@@ -6,7 +6,7 @@ Example:
 
 >>> from ftplib import FTP
 >>> ftp = FTP('ftp.python.org') # connect to host, default port
->>> ftp.login() # default, i.e.: user anonymous, passwd user@hostname
+>>> ftp.login() # default, i.e.: user anonymous, passwd anonymous@
 '230 Guest login ok, access restrictions apply.'
 >>> ftp.retrlines('LIST') # list directory contents
 total 9