Bug #1210001: typo in email doc

Doc/lib/email.tex

@@ -244,7 +244,7 @@ The \class{Message} class has the following differences:
 
 \item The method \method{gettype()} was renamed to \method{get_type()}.
 
-\item The method\method{getmaintype()} was renamed to
+\item The method \method{getmaintype()} was renamed to
       \method{get_main_type()}.
 
 \item The method \method{getsubtype()} was renamed to