Update gettingstarted.rst

docs/gettingstarted.rst

@@ -106,6 +106,10 @@ following code. Also, tree observation data is displayed by RenderTool by defaul
     for i in range(env.get_num_agents()):
         env.obs_builder.util_print_obs_subtree(tree=obs[i], num_features_per_node=5)
 
+The complete code for this part of the Getting Started guide can be found in 
+examples/simple_example_1.py, examples/simple_example_2.py and 
+examples/simple_example_3.py
+
 
 
 Part 2 : Training a Simple DQN Agent