Fix wrong character for lstinline command

Author: gbfredrik

Docs/UserGuide/tradedata/commodityapo.tex

@@ -27,7 +27,7 @@ \subsubsection{Commodity Average Price Option}
 
 Allowable values:  See \lstinline!Name! for commodity trades in Table \ref{tab:commodity_data}.
 
-\item \lstinline!Currency!: The currency of the payoff which must be consistent with either currency of the market data set up for the commodity or the other currency specified in !lstinline!FXIndex! (see below).
+\item \lstinline!Currency!: The currency of the payoff which must be consistent with either currency of the market data set up for the commodity or the other currency specified in \lstinline!FXIndex! (see below).
 
 Allowable values: See \lstinline!Currency!  in Table \ref{tab:allow_stand_data}.