update DataFrame.to_feather docstring

Author: arw2019

pandas/core/frame.py

@@ -2198,8 +2198,7 @@ def to_feather(self, path, **kwargs) -> None:
 
         Parameters
         ----------
-        path : str
-            String file path.
+        path : string file path, or file-like object
         **kwargs :
             Additional keywords passed to :func:`pyarrow.feather.write_feather`.
             Starting with pyarrow 0.17, this includes the `compression`,