shift(freq='-30T') -> shift(freq='-30min') [2 - missed entry]

Author: echedey-ls

docs/examples/floating-pv/plot_floating_pv_cell_temperature.py

@@ -140,7 +140,7 @@
 
 solar_position = pvlib.solarposition.get_solarposition(
     # TMY timestamp is at end of hour, so shift to center of interval
-    tmy.index.shift(freq='-30T'),
+    tmy.index.shift(freq='-30min'),
     latitude=metadata['latitude'],
     longitude=metadata['longitude'],
     altitude=metadata['altitude'],