DOC: update EAB example to plot data outside the EAB

[aburrell]

Is your feature request related to a problem? Please describe.
The EAB is best used alone for data at lower latitudes

Describe the solution you'd like
Change the pysat/EAB example to plot the data outside the EAB

Describe alternatives you've considered
Add a new example

Additional context
It's best to not provide an example of the worst way to use a boundary.