Fixing ParallelFor example.

using namespace TNL;

using namespace TNL::Containers;

using namespace TNL::Algorithms;

/****

 * Set all elements of the vector v to the constant c.

{

   auto view = v.getConstView();

   auto init = [=] __cuda_callable__  ( int i, const double c ) mutable {

      view[ i ] = c; }

      view[ i ] = c; };

   ParallelFor< Device >::exec( 0, v.getSize(), init, c );

   Algorithms::ParallelFor< Device >::exec( 0, v.getSize(), init, c );

}

int main( int argc, char* argv[] )