fix SeriesGroupBy.is_monotonic_decreasing See Also section (decreasing -> increasing)

Author: root

pandas/core/groupby/generic.py

@@ -1469,8 +1469,8 @@ def is_monotonic_decreasing(self) -> Series:
 
         See Also
         --------
-        SeriesGroupBy.is_monotonic_decreasing : Return whether each group's values
-            are monotonically decreasing.
+        SeriesGroupBy.is_monotonic_increasing : Return whether each group's values
+            are monotonically increasing.
 
         Examples
         --------