Minor documentation error in description of return value of `pvlib.solarposition.ephemeris`

[kandersolar]

The docstring for pvlib.solarposition.ephemeris incorrectly describes azimuth as "the complement of the apparent zenith angle":

pvlib-python/pvlib/solarposition.py

Lines 718 to 728 in 72185cb

	* apparent_elevation : apparent sun elevation accounting for
	atmospheric refraction.
	* elevation : actual elevation (not accounting for refraction)
	of the sun in decimal degrees, 0 = on horizon.
	The complement of the zenith angle.
	* azimuth : Azimuth of the sun in decimal degrees East of North.
	This is the complement of the apparent zenith angle.
	* apparent_zenith : apparent sun zenith accounting for atmospheric
	refraction.
	* zenith : Solar zenith angle
	* solar_time : Solar time in decimal hours (solar noon is 12.00).

I'm guessing this was an editing error while swapping the order of entries in that list. To fix the error, the sentence in question ("This is the complement of the apparent zenith angle.") should be moved to the description of apparent_elevation.

I suggest we hold off on fixing this issue so that it remains available for a new contributor to fix during the upcoming pvlib user's group meeting in Copenhagen.