Fix error where the end of a funcdesc environment was accidentally moved too

far down.

Doc/lib/libtest.tex

@@ -281,6 +281,7 @@ Execute the \class{unittest.TestSuite} instance \var{suite}.
 The optional argument \var{testclass} accepts one of the test classes in the
 suite so as to print out more detailed information on where the testing suite
 originated from.
+\end{funcdesc}
 
 The \module{test.test_support} module defines the following classes:
 
@@ -299,4 +300,3 @@ Temporarily set the environment variable \code{envvar} to the value of
 Temporarily unset the environment variable \code{envvar}.
 \end{methoddesc}
 
-\end{funcdesc}