fix wording in dynare++ resources section

resources/index.md

@@ -141,11 +141,11 @@ Various bits of information such as [new](https://git.dynare.org/Dynare/dynare/w
 </p>
 
 # <i class="icon-book"></i> Dynare++
-Originally written by Ondra Kamenik in C++, Dynare++ computes higher order
-approximations of DSGE models via a perturbation method. It is available both
-as a standalone executable program (shipped in the Dynare package) and via
-Dynare where it is used for higher order approximations (starting from third
-order).
+
+Originally written by Ondra Kamenik, Dynare++ is a C++ library that computes
+higher order approximations of DSGE models via a perturbation method. It is
+available as a standalone executable program (shipped with the Dynare
+installer) and is also used by Dynare to compute third order approximations.
 
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