fix typo
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index a0db630..6cf0b2b 100644
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -4781,7 +4781,7 @@
Despite the modules names, no direct knowledge or handling of XML is needed.
\item The \ulink{\module{email}}{../lib/module-email.html} package is a library
for managing email messages, including MIME and other RFC 2822-based message
- documents. Unlike \module{smptlib} and \module{poplib} which actually send
+ documents. Unlike \module{smtplib} and \module{poplib} which actually send
and receive messages, the email package has a complete toolset for building
or decoding complex message structures (including attachments) and for
implementing internet encoding and header protocols.