syntax correction in exercise 5.3

Author: albertobottopoala

advection/advection-higherorder.tex

@@ -355,7 +355,7 @@ \subsection{Limiting}
 
 \begin{exercise}[Limiting and reduction in order-of-accuracy]
 {Show analytically that if you fully limit the slopes
-  (i.e.\ set $\partial a/\partial x |_i = 0$, that the second-order
+	(i.e.\ set $\partial a/\partial x |_i = 0$),then the second-order
   method reduces to precisely our first-order finite-difference discretization,
   Eq.~\ref{eq:fo}.  }
 \end{exercise}