Location of further discussion of Code of Conduct

### How could the content be improved?

[Inclusive Practices in a Carpentries Workshop](https://carpentries.github.io/instructor-training/09-eia.html#inclusive-practices-in-a-carpentries-workshop) notes "We will discuss the Code of Conduct in greater detail in Part 4 of this training during our discussion of Working with your team."

This is actually in episode/part 21, so I offer two suggestions:

1. Consistency in how we refer to segments of our lessons, as "part" or "episode" etc.
2. Linking to that section when we refer to it.

### Which part of the content does your suggestion apply to?

https://carpentries.github.io/instructor-training/09-eia.html#inclusive-practices-in-a-carpentries-workshop

Start with the Inclusive Practices in a Carpentries Workshop section at the linked URL and verify where the Code of Conduct discussion occurs. Update the segment terminology consistently and add a link to episode/part 21; done means the reference accurately points readers to that discussion.

Written by the indexing model from the issue text.