Remove duplicate ', ' in dbhash.open()'s argument list.
diff --git a/Doc/lib/libdbhash.tex b/Doc/lib/libdbhash.tex
index d3ed0da..4b856de 100644
--- a/Doc/lib/libdbhash.tex
+++ b/Doc/lib/libdbhash.tex
@@ -21,7 +21,7 @@
\exception{KeyError}. It is a synonym for \exception{bsddb.error}.
\end{excdesc}
-\begin{funcdesc}{open}{path, \optional{, flag\optional{, mode}}}
+\begin{funcdesc}{open}{path\optional{, flag\optional{, mode}}}
Open a \code{db} database and return the database object. The
\var{path} argument is the name of the database file.