Printing-the-system-Matrix.md

@@ -30,7 +30,7 @@ We add the output within the `solveLinearSystemImpl_` overload for `Dune::MultiT
     if (printmatrix)
     {
         static int counter = 0;
-        const auto rank = Dune::MPIHelper::getCollectiveCommunication().rank();
+        const auto rank = Dune::MPIHelper::getCommunication().rank();
 
         Dune::storeMatrixMarket(M, "matrix_" + std::to_string(rank) +  "_iter_" + std::to_string(counter) + ".log");
         Dune::storeMatrixMarket(bTmp, "rhs_" + std::to_string(rank) +  "_iter_" + std::to_string(counter) + ".log");