DOC: Fixed PR06 docstring errors in pandas.DataFrame (pandas-dev#28718)

Author: LauraCollard

pandas/core/frame.py

@@ -7948,7 +7948,7 @@ def idxmin(self, axis=0, skipna=True):
         ----------
         axis : {0 or 'index', 1 or 'columns'}, default 0
             The axis to use. 0 or 'index' for row-wise, 1 or 'columns' for column-wise
-        skipna : boolean, default True
+        skipna : bool, default True
             Exclude NA/null values. If an entire row/column is NA, the result
             will be NA.
 
@@ -7985,7 +7985,7 @@ def idxmax(self, axis=0, skipna=True):
         ----------
         axis : {0 or 'index', 1 or 'columns'}, default 0
             The axis to use. 0 or 'index' for row-wise, 1 or 'columns' for column-wise
-        skipna : boolean, default True
+        skipna : bool, default True
             Exclude NA/null values. If an entire row/column is NA, the result
             will be NA.