Add missing close parenthesis.

Doc/lib/libstdtypes.tex

@@ -755,16 +755,16 @@ elements).  If \var{maxsplit} is not specified or is zero, then there
 is no limit on the number of splits (all possible splits are made).
 Consecutive delimiters are not grouped together and are
 deemed to delimit empty strings (for example, \samp{'1,,2'.split(',')}
-returns \samp{['1', '', '2']}.  The \var{sep} argument may consist of
+returns \samp{['1', '', '2']}).  The \var{sep} argument may consist of
 multiple characters (for example, \samp{'1, 2, 3'.split(', ')} returns
-\samp{['1', '2', '3']}.  Splitting an empty string with a specified
+\samp{['1', '2', '3']}).  Splitting an empty string with a specified
 separator returns an empty list.
 
 If \var{sep} is not specified or is \code{None}, a different splitting
 algorithm is applied.  Words are separated by arbitrary length strings of
 whitespace characters (spaces, tabs, newlines, returns, and formfeeds).
 Consecutive whitespace delimiters are treated as a single delimiter
-(\samp{'1   2  3'.split()} returns \samp{['1', '2', '3']}.  Splitting an
+(\samp{'1   2  3'.split()} returns \samp{['1', '2', '3']}).  Splitting an
 empty string returns \samp{['']}.
 \end{methoddesc}