Merge pull request #310 from jakirkham/fix_typo_comment

Fix typo in comment

Author: alimanfoo

zarr/indexing.py

@@ -678,7 +678,7 @@ def __init__(self, selection, array):
         else:
             sel_sort = None
 
-        # store atrributes
+        # store attributes
         self.selection = selection
         self.sel_sort = sel_sort
         self.shape = selection[0].shape if selection[0].shape else (1,)