DOC: fix EX03 errors in docstrings (#56855)

Author: tqa236

ci/code_checks.sh

@@ -88,7 +88,7 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.io.formats.style.Styler.background_gradient \
         pandas.io.formats.style.Styler.text_gradient \
         pandas.DataFrame.plot.hexbin \
-        pandas.DataFrame.plot.line \
+        pandas.DataFrame.plot.line
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
 fi

pandas/core/arrays/datetimes.py

@@ -213,7 +213,10 @@ class DatetimeArray(dtl.TimelikeOps, dtl.DatelikeOps):  # type: ignore[misc]
     Examples
     --------
     >>> pd.arrays.DatetimeArray._from_sequence(
-    ...    pd.DatetimeIndex(['2023-01-01', '2023-01-02'], freq='D'))
+    ...     pd.DatetimeIndex(
+    ...         ["2023-01-01", "2023-01-02"], freq="D"
+    ...     )
+    ... )
     <DatetimeArray>
     ['2023-01-01 00:00:00', '2023-01-02 00:00:00']
     Length: 2, dtype: datetime64[ns]

pandas/core/indexes/base.py

@@ -2124,7 +2124,8 @@ def droplevel(self, level: IndexLabel = 0):
         Examples
         --------
         >>> mi = pd.MultiIndex.from_arrays(
-        ...     [[1, 2], [3, 4], [5, 6]], names=['x', 'y', 'z'])
+        ...     [[1, 2], [3, 4], [5, 6]], names=['x', 'y', 'z']
+        ... )
         >>> mi
         MultiIndex([(1, 3, 5),
                     (2, 4, 6)],

pandas/core/indexes/multi.py

@@ -1638,7 +1638,8 @@ def _set_names(self, names, *, level=None, validate: bool = True) -> None:
         Examples
         --------
         >>> mi = pd.MultiIndex.from_arrays(
-        ... [[1, 2], [3, 4], [5, 6]], names=['x', 'y', 'z'])
+        ...     [[1, 2], [3, 4], [5, 6]], names=['x', 'y', 'z']
+        ... )
         >>> mi
         MultiIndex([(1, 3, 5),
                     (2, 4, 6)],