Update README.md

exercises/exercise-properties/README.md

@@ -80,7 +80,7 @@ SET_TYPE_PROP(TwoPIncompressible, LocalResidual,
 ```
 Observe the difference in the output of the type tag tree.
 
-You want to simplify the original local residual by using the assumption that only incompressible fluid phases are present. As a consequence, one can balance phase volume instead of phase mass.
+Simplify the original local residual by using the assumption that only incompressible fluid phases are present. As a consequence, one can balance phase volume instead of phase mass.
 
 * Eliminate the density from the `computeStorage` and the `computeFlux` methods.