Docs: corrected index for cmb leg in listing

Author: Martin Sjogren

Docs/UserGuide/tradecomponents/cmbleg.tex

@@ -22,7 +22,7 @@ \subsubsection{Constant Maturity Bond Leg Data}
           ...
         </ScheduleData>
         <CMBLegData>
-          <Index>CMB-US-TBILL-13W</Index>
+          <Index>CMB-US-TBILL-HD-13W</Index>
           <FixingDays>2</FixingDays>
           <Spreads>
             <Spread>0.0010</Spread>