Update orbax_upgrade_guide.rst

docs/guides/converting_and_upgrading/orbax_upgrade_guide.rst

@@ -179,7 +179,7 @@ Then, you can call ``orbax.checkpoint.AsyncCheckpointer.wait_until_finished()``
 
 For more details, read the `checkpoint guide <https://flax.readthedocs.io/en/latest/guides/training_techniques/use_checkpointing.html#asynchronized-checkpointing>`_.
 
-You can also use Orbax AsyncCheckpointer with Flax APIs through async manager. Async manager internally calls wait_until_finished(). This solution is not actively mainted and the recommedation is to use Orbax async checkpointing.
+You can also use Orbax AsyncCheckpointer with Flax APIs through async manager. Async manager internally calls wait_until_finished(). This solution is not actively maintained and the recommedation is to use Orbax async checkpointing.
 
 For example: