Apply suggestions from code review

Co-authored-by: Joren Hammudoglu <jhammudoglu@gmail.com>
Signed-off-by: Nathaniel Starkman <nstarman@users.noreply.github.com>

Author: nstarman

src/array_api_typing/__init__.py

@@ -1,5 +1,5 @@
 """Static typing support for the array API standard."""
 
-__all__: list[str] = []
+__all__ = ()
 
 from ._version import version as __version__ , version_tuple as __version_tuple__