Fix formatting of 'if-clause'

chapters/dae.tex

@@ -133,7 +133,7 @@ \chapter{Modelica DAE Representation}\label{modelica-dae-representation}
 \begin{enumerate}
 \item\label{perform-simulation-integrate}
   The DAE \eqref{eq:dae} is solved by a numerical integration method.
-  In this phase the conditions $c$ of the if- and \lstinline!when!-clauses, as well as the discrete-time variables $z$ and $m$ are kept constant.
+  In this phase the conditions $c$ of the \lstinline!if!- and \lstinline!when!-clauses, as well as the discrete-time variables $z$ and $m$ are kept constant.
   Therefore, \eqref{eq:dae} is a continuous function of continuous variables and the most basic requirement of numerical integrators is fulfilled.
 \item
   During integration, all relations from \eqref{eq:crossing} are monitored.