pathes --> paths; typo reported by Gerry Wiener <gerry@ucar.edu>.

Doc/lib/libdircache.tex

@@ -26,7 +26,7 @@ Same as \function{listdir()}. Defined for backwards compatability.
 \end{funcdesc}
 
 \begin{funcdesc}{annotate}{head, list}
-Assume \var{list} is a list of pathes relative to \var{head}, and append,
+Assume \var{list} is a list of paths relative to \var{head}, and append,
 in place, a \character{/} to each path which points to a directory.
 \end{funcdesc}