Clarify difference between compute and load in xarray example

[jsignell]

Some minor changes to the xarray tutorial that hopefully make it a little clearer. I'll merge this tomorrow if there are no comments.

[review-notebook-app[bot]]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[jsignell]

Well it's not "tomorrow", but better late than never :)