Fix doc typos (#5620)

* stochastic env,  typo fix

Author: maryamhonari

docs/Package-Settings.md

@@ -7,7 +7,7 @@ You can find them at `Edit` > `Project Settings...` > `ML-Agents`. It lists out
 
 
 ## Create Custom Settings
-In order to to use you own settings for your project, you'll need to create an settings asset.
+In order to to use your own settings for your project, you'll need to create a settings asset.
 
 You can do this by clicking the `Create Settings Asset` buttom or clicking the gear on the top right and select `New Settings Asset...`.
 The asset file can be placed anywhere in the `Asset/` folder in your project.

docs/Python-API.md

@@ -81,7 +81,7 @@ to read more about how you can interact with the Unity environment from Python.
 - `worker_id` indicates which port to use for communication with the
   environment. For use in parallel training regimes such as A3C.
 - `seed` indicates the seed to use when generating random numbers during the
-  training process. In environments which are deterministic, setting the seed
+  training process. In environments which are stochastic, setting the seed
   enables reproducible experimentation by ensuring that the environment and
   trainers utilize the same random seed.
 - `side_channels` provides a way to exchange data with the Unity simulation that