Shorten run-on sentence

Doc/tut/tut.tex

@@ -5272,7 +5272,7 @@ You should read, or at least page through, the
 which gives complete (though terse) reference material about types,
 functions, and modules that can save you a lot of time when writing
 Python programs.  The standard Python distribution includes a
-\emph{lot} of code in both C and Python; there are modules to read
+\emph{lot} of additional code.  There are modules to read
 \UNIX{} mailboxes, retrieve documents via HTTP, generate random
 numbers, parse command-line options, write CGI programs, compress
 data, and a lot more; skimming through the Library Reference will give