Correct "Wind Speed" to "Wind Speed Units" in PSM3 (#1375)

* Correct "Wind Speed" to "Wind Speed Units"

* Add whatsnew entry

Author: AdamRJensen

docs/sphinx/source/whatsnew/v0.9.1.rst

@@ -22,7 +22,8 @@ Bug fixes
   argument was not being passed to the ``optimalinclination`` request parameter (:pull:`1356`)
 * Fixed bug in :py:func:`pvlib.bifacial.pvfactors_timeseries` where scalar ``surface_tilt``
   and ``surface_azimuth`` inputs caused an error (:issue:`1127`, :issue:`1332`, :pull:`1361`) 
-
+* Changed the metadata entry for the wind speed unit to "Wind Speed Units" in
+  the PSM3 iotools function (:pull:`1375`)
 
 Testing
 ~~~~~~~

pvlib/data/test_read_psm3.csv

@@ -1,4 +1,4 @@
-Source,Location ID,City,State,Country,Latitude,Longitude,Time Zone,Elevation,Local Time Zone,Clearsky DHI Units,Clearsky DNI Units,Clearsky GHI Units,Dew Point Units,DHI Units,DNI Units,GHI Units,Solar Zenith Angle Units,Temperature Units,Pressure Units,Relative Humidity Units,Precipitable Water Units,Wind Direction Units,Wind Speed,Cloud Type -15,Cloud Type 0,Cloud Type 1,Cloud Type 2,Cloud Type 3,Cloud Type 4,Cloud Type 5,Cloud Type 6,Cloud Type 7,Cloud Type 8,Cloud Type 9,Cloud Type 10,Cloud Type 11,Cloud Type 12,Fill Flag 0,Fill Flag 1,Fill Flag 2,Fill Flag 3,Fill Flag 4,Fill Flag 5,Surface Albedo Units,Version
+Source,Location ID,City,State,Country,Latitude,Longitude,Time Zone,Elevation,Local Time Zone,Clearsky DHI Units,Clearsky DNI Units,Clearsky GHI Units,Dew Point Units,DHI Units,DNI Units,GHI Units,Solar Zenith Angle Units,Temperature Units,Pressure Units,Relative Humidity Units,Precipitable Water Units,Wind Direction Units,Wind Speed Units,Cloud Type -15,Cloud Type 0,Cloud Type 1,Cloud Type 2,Cloud Type 3,Cloud Type 4,Cloud Type 5,Cloud Type 6,Cloud Type 7,Cloud Type 8,Cloud Type 9,Cloud Type 10,Cloud Type 11,Cloud Type 12,Fill Flag 0,Fill Flag 1,Fill Flag 2,Fill Flag 3,Fill Flag 4,Fill Flag 5,Surface Albedo Units,Version
 NSRDB,155474,-,-,-,40.53,-108.54,-7,2133,-7,w/m2,w/m2,w/m2,c,w/m2,w/m2,w/m2,Degree,c,mbar,%,cm,Degrees,m/s,N/A,Clear,Probably Clear,Fog,Water,Super-Cooled Water,Mixed,Opaque Ice,Cirrus,Overlapping,Overshooting,Unknown,Dust,Smoke,N/A,Missing Image,Low Irradiance,Exceeds Clearsky,Missing CLoud Properties,Rayleigh Violation,N/A,v3.0.1
 Year,Month,Day,Hour,Minute,DHI,DNI,GHI,Clearsky DHI,Clearsky DNI,Clearsky GHI,Cloud Type,Dew Point,Solar Zenith Angle,Fill Flag,Surface Albedo,Wind Speed,Precipitable Water,Wind Direction,Relative Humidity,Temperature,Pressure,,,,,,,,,,,,,,,,,,,,,,,,
 2017,1,1,0,0,0,0,0,0,0,0,1,-10,162.05,0,0.866,0.3,0.417,166.4,74.79,-8,780,,,,,,,,,,,,,,,,,,,,,,,,

pvlib/iotools/psm3.py

@@ -223,7 +223,7 @@ def parse_psm3(fbuf):
     * Relative Humidity Units
     * Precipitable Water Units
     * Wind Direction Units
-    * Wind Speed
+    * Wind Speed Units
     * Cloud Type -15
     * Cloud Type 0
     * Cloud Type 1

pvlib/tests/iotools/test_psm3.py

@@ -22,7 +22,7 @@
     'Longitude', 'Time Zone', 'Elevation', 'Local Time Zone',
     'Dew Point Units', 'DHI Units', 'DNI Units', 'GHI Units',
     'Temperature Units', 'Pressure Units', 'Wind Direction Units',
-    'Wind Speed', 'Surface Albedo Units', 'Version']
+    'Wind Speed Units', 'Surface Albedo Units', 'Version']
 PVLIB_EMAIL = '[email protected]'