typo (#588)

docs/evaluation/how_to_guides/evaluate_with_attachments.mdx

@@ -422,7 +422,7 @@ groupId="client-language"
 ### Manage programmatically
 
 In the code [above](#add-examples-with-attachments-to-a-langsmith-dataset), we showed how to add examples with attachments to a dataset.
-is also possible to update these same examples using the SDK.
+It is also possible to update these same examples using the SDK.
 
 As with existing examples, datasets are versioned when you update them with attachments. Therefore, you can navigate to the dataset version history to see the changes made to each example.
 To learn more, please see [this guide](./manage_datasets_in_application).