Fix LaTeX bug found by examining the docstrings added to commands.py.
diff --git a/Doc/lib/libcommands.tex b/Doc/lib/libcommands.tex
index 7584931..f2fcb79 100644
--- a/Doc/lib/libcommands.tex
+++ b/Doc/lib/libcommands.tex
@@ -14,7 +14,7 @@
\begin{funcdesc}{getstatusoutput}{cmd}
Execute the string \var{cmd} in a shell with \code{os.popen()} and return
a 2-tuple (status, output). \var{cmd} is actually run as
-\samp{cmd ; 2$>$\$1}, so that the returned output will contain output
+\samp{\{\ cmd \} ; 2$>$\$1}, so that the returned output will contain output
or error messages. A trailing newline is stripped from the output.
The exit status for the command can be interpreted according to the
rules for the \C{} function \code{wait()}.