Typo in dataset docstring (#8593)

Co-authored-by: Joe Hamman <joe@earthmover.io>

Author: johmathe

xarray/core/dataset.py

@@ -2659,7 +2659,7 @@ def chunk(
             already as dask array.
         chunked_array_type: str, optional
             Which chunked array type to coerce this datasets' arrays to.
-            Defaults to 'dask' if installed, else whatever is registered via the `ChunkManagerEnetryPoint` system.
+            Defaults to 'dask' if installed, else whatever is registered via the `ChunkManagerEntryPoint` system.
             Experimental API that should not be relied upon.
         from_array_kwargs: dict, optional
             Additional keyword arguments passed on to the `ChunkManagerEntrypoint.from_array` method used to create