Saver documentation inconsistent with example

[ama261]

Hi, The documentations for saver parameter in various agents mention that frequency is in seconds: "frequency (int > 0) – how frequently in seconds to save the model (default: 600 seconds)." link https://tensorforce.readthedocs.io/en/0.5.5/agents/ppo.html However, in save and load example written that frequency is in updates: " # Option 1: Saver - save agent periodically every 10 updates" Link: https://github.com/tensorforce/tensorforce/blob/master/examples/save_load_agent.py

Which one is the correct behaviour?