Docs: corrcted that Swaptions can have American style

Author: Martin Sjogren

Docs/UserGuide/tradecomponents/optiondata.tex

@@ -111,8 +111,8 @@ \subsubsection{Option Data}
 
   Allowable values: \emph{European} or \emph{American} or \emph{Bermudan}. 
   
-  Note that trade types IR Swaption and CallableSwap can have style
-  \emph{European} or \emph{Bermudan}, but not \emph{American}.  
+  Note that trade types IR Swaption and CallableSwap can have all three styles:
+  \emph{European}, \emph{Bermudan}, or \emph{American}.  
   
   FX, Equity and Commodity vanilla options can have styles \emph{European}
   or \emph{American}, but not \emph{Bermudan}.