FIX: minor issues

src/examples/net_test_pde_1.cpp

@@ -248,10 +248,10 @@ void test_pde(double accuracy, size_t n_inner_neurons, size_t train_size, double
     optimize_via_gradient_descent( solver_01, accuracy );
     export_solution( n_test_points, te, ts, solver_01 , alpha_00, alpha_01, alpha_20, "gradient_" );
 
-
 }
 
 int main() {
+
     std::cout << "Running lib4neuro Partial Differential Equation example   1" << std::endl;
     std::cout << "********************************************************************************************************************************************" <<std::endl;
     std::cout << "          Governing equation: y_xx - y_t = 0,                                   for (x, t) in [0, 1] x [0, 1]" << std::endl;
@@ -276,4 +276,5 @@ int main() {
     test_pde(accuracy, n_inner_neurons, train_size, ds, de, test_size, ts, te, particle_swarm_max_iters, n_particles);
 
     return 0;
+
 }