supports_unicode_filenames was not in the right location.

Doc/lib/libposixpath.tex

@@ -229,13 +229,6 @@ avoid visiting certain parts of the tree.  (The object referred to by
 \var{names} must be modified in place, using \keyword{del} or slice
 assignment.)
 
-\begin{datadesc}{supports_unicode_filenames}
-True if arbitrary Unicode strings can be used as file names (within
-limitations imposed by the file system), and if os.listdir returns
-Unicode strings for a Unicode argument.
-\versionadded{2.3}
-\end{datadesc}
-
 \begin{notice}
 Symbolic links to directories are not treated as subdirectories, and
 that \function{walk()} therefore will not visit them. To visit linked
@@ -245,3 +238,11 @@ directories you must identify them with
 necessary.
 \end{notice}
 \end{funcdesc}
+
+\begin{datadesc}{supports_unicode_filenames}
+True if arbitrary Unicode strings can be used as file names (within
+limitations imposed by the file system), and if
+\function{os.listdir()} returns Unicode strings for a Unicode
+argument.
+\versionadded{2.3}
+\end{datadesc}