Backport PR matplotlib#32265: DOC: minor fix in pie_label docstring

Author: jklymak

lib/matplotlib/axes/_axes.py

@@ -3794,7 +3794,7 @@ def pie_label(self, container, /, labels, *, distance=0.6,
             string with ``absval`` and/or ``frac`` placeholders.  For example, to label
             each wedge with its value and the percentage in brackets::
 
-                wedge_labels="{absval:d} ({frac:.0%})"
+                labels="{absval:d} ({frac:.0%})"
 
         distance : float, default: 0.6
             The radial position of the labels, relative to the pie radius. Values > 1