Documentation Link

https://matplotlib.org/stable/api/_as_gen/matplotlib.axes.Axes.plot.html

Problem

A comma is missing in the second list item of ‘Plot multiple data sets’:
If x and/or y are 2D arraysinsert comma here a separate data set will be drawn for every column.

Suggested improvement

If x and/or y are 2D arrays, a separate data set will be drawn for every column.