Fix link in require_array

Author: dstansby

src/zarr/core/group.py

@@ -1171,7 +1171,7 @@ async def require_array(
     ) -> AnyAsyncArray:
         """Obtain an array, creating if it doesn't exist.
 
-        Other `kwargs` are as per [zarr.AsyncGroup.create_dataset][].
+        Other `kwargs` are as per [zarr.AsyncGroup.create_array][].
 
         Parameters
         ----------