QPR-13793 Fix latex

Author: sebastien.bouvard

Docs/UserGuide/parameterisation/ore.tex

@@ -1103,7 +1103,7 @@ \subsubsection{Correlation}
 The parameters have the following interpretation:
 
 \begin{itemize}
-\item {\tt correlation_method}: Regular expression used to filter the portfolio for which VaR is computed; if the filter is not provided, then the full portfolio is processed
+\item {\tt correlation\_method}: Regular expression used to filter the portfolio for which VaR is computed; if the filter is not provided, then the full portfolio is processed
 \item {\tt marketConfigFile}: Configuration file defining the simulation market under which sensitivities are computed,
   see \ref{sec:simulation}. Only a subset of the specification is needed (the one given under {\tt Market}, see
   \ref{sec:sim_market} for a detailed description).