Merge pull request #366 from tlehman/patch-1

typo 'and' should be 'an'

docs/pages/getting-started/dedicated-tokenizer/apollo-graphql.md

@@ -21,7 +21,7 @@ sidebar_position: 3
 
 Because we need to set and check Grants (LunaSec's token specific permissions), the server needs to know what fields are tokens.
 We provide a schema directive to make this straightforward.  Behind the scenes, the directive calls the Dedicated Tokenizer.
-If there is a problem with the session or the Grant, it will throw and error that Apollo will handle and send to the client.
+If there is a problem with the session or the Grant, it will throw an error that Apollo will handle and send to the client.
 
 ### Automatically create and verify token grants for any field with the @token directive.