message: Article addition.
diff: @@ -6,7 +6,7 @@ and use `id` or `_id` to identify them.
  The `keys` property allows us to intervene in this behavior by pointing
  to another location on the entity or by pre-/post-fixing it.
  -Let's look at an example. Say we have a set of todos each with `__typename`
  +Let's look at an example. Say we have a set of todos each with a `__typename`
  of `Todo`, but instead of identifying on `id` or `_id` we want to identify
  each record by its `name`.
  