fix typos

Author: hayes

packages/plugin-dataloader/README.md

@@ -384,7 +384,7 @@ const User = builder.loadableObject('User', {
 });
 ```
 
-Whenever a resolver returns a User or list of Users, those objects will automatically be added the
+Whenever a resolver returns a User or list of Users, those objects will automatically be added to the
 dataloaders cache, so they can be re-used in other parts of the query.
 
 ### Sorting results from your `load` function

website/content/docs/plugins/dataloader.mdx

@@ -465,7 +465,7 @@ const User = builder.loadableObject('User', {
 });
 ```
 
-Whenever a resolver returns a User or list of Users, those objects will automatically be added the
+Whenever a resolver returns a User or list of Users, those objects will automatically be added to the
 dataloaders cache, so they can be re-used in other parts of the query.
 
 ### Sorting results from your `load` function