Update docstring of `collections.copy_mapping`
@@ -422,8 +422,8 @@ def get_index_or_slice(
def copy_mapping(mapping: typing.Mapping[KeyT, ValueT]) -> typing.MutableMapping[KeyT, ValueT]:
"""Logic for copying mappings that targets implementation specific copy impls (e.g. dict.copy).
- .. deprecated::
- `MappedCollection` should be preferred over this.
+ !!! warning
+ For general use, `MappedCollection` should be preferred over this.
"""
# dict.copy ranges from between roughly 2 times to 5 times more efficient than casting to a dict so we want to
# try to use this where possible.
