Wrong documentation on order parameter in Epochs.plot()

[MCPost]

Proposed documentation enhancement

I found a small error in your documentation of the Epochs.plot() function. The input to the order parameter (for displaying the sensors/channels in a different order) is described as a "array of strings". After comparing it to the raw.plot documentation and trial and error, I figured it should be "array of integers", like in raw.plot. With an integer array it actually works as intended.

[scott-huberty]

@MCPost that sounds reasonable to me, we would be very appreciative if you propose the correction in a PR!