- Make the documentation match the code and the docstring

Doc/lib/libsmtplib.tex

@@ -185,7 +185,7 @@ or may raise the following exceptions:
     The server didn't reply properly to the \samp{HELO} greeting.
   \item[\exception{SMTPAuthenticationError}]
     The server didn't accept the username/password combination.
-  \item[\exception{SMTPError}]
+  \item[\exception{SMTPException}]
     No suitable authentication method was found.
 \end{description}
 \end{methoddesc}