Fix docstring error

Author: snitish

pandas/core/resample.py

@@ -1259,8 +1259,53 @@ def last(
         )
 
     @final
-    @doc(GroupBy.median)
     def median(self, numeric_only: bool = False):
+        """
+        Compute median of groups, excluding missing values.
+
+        For multiple groupings, the result index will be a MultiIndex
+
+        Parameters
+        ----------
+        numeric_only : bool, default False
+            Include only float, int, boolean columns.
+
+            .. versionchanged:: 2.0.0
+
+                numeric_only no longer accepts ``None`` and defaults to False.
+
+        Returns
+        -------
+        Series or DataFrame
+            Median of values within each group.
+
+        See Also
+        --------
+        Series.groupby : Apply a function groupby to a Series.
+        DataFrame.groupby : Apply a function groupby to each row or column of a
+            DataFrame.
+
+        Examples
+        --------
+
+        >>> ser = pd.Series(
+        ...     [1, 2, 3, 3, 4, 5],
+        ...     index=pd.DatetimeIndex(
+        ...         [
+        ...             "2023-01-01",
+        ...             "2023-01-10",
+        ...             "2023-01-15",
+        ...             "2023-02-01",
+        ...             "2023-02-10",
+        ...             "2023-02-15",
+        ...         ]
+        ...     ),
+        ... )
+        >>> ser.resample("MS").median()
+        2023-01-01    2.0
+        2023-02-01    4.0
+        Freq: MS, dtype: float64
+        """
         return self._downsample("median", numeric_only=numeric_only)
 
     @final