DOC: Fixing EX01 - Added examples (#54213)

* to_feather example

* examples on correct file

Author: DeaMariaLeon

ci/code_checks.sh

@@ -76,7 +76,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.test \
         pandas.NaT \
         pandas.read_feather \
-        pandas.DataFrame.to_feather \
         pandas.read_orc \
         pandas.read_sas \
         pandas.read_spss \

pandas/core/frame.py

@@ -2757,6 +2757,11 @@ def to_feather(self, path: FilePath | WriteBuffer[bytes], **kwargs) -> None:
         <https://arrow.apache.org/docs/python/feather.html>`_. Requires a default
         index. For saving the DataFrame with your custom index use a method that
         supports custom indices e.g. `to_parquet`.
+
+        Examples
+        --------
+        >>> df = pd.DataFrame([[1, 2, 3], [4, 5, 6]])
+        >>> df.to_feather("file.feather")  # doctest: +SKIP
         """
         from pandas.io.feather_format import to_feather