Adapt stopping criterion message

dune/solvers/solvers/proximalnewtonsolver.hh

@@ -276,7 +276,7 @@ namespace Dune::Solvers
       if ( (1.0 + regWeight)*normCorrection < tolerance_ )
       {
         if ( printOutput )
-          std::cout << "ProximalNewtonSolver terminated because of correction is below tolerance: " << normCorrection << std::endl;
+          std::cout << "ProximalNewtonSolver terminated because of weighted correction is below tolerance: " << (1.0 + regWeight)*normCorrection << std::endl;
         break;
       }