Fix typo in fine-grained-security.mdx (thecodingmachine#705)

Author: DocentBF

website/versioned_docs/version-7.0.0/fine-grained-security.mdx

@@ -417,5 +417,5 @@ If you are using Symfony, you will [create a custom voter](https://symfony.com/d
 If you are using Laravel, you will [create a Gate or a Policy](https://laravel.com/docs/6.x/authorization).
 
 If you are using another framework, you need to know that the `is_granted` function simply forwards the call to
-the `isAllowed` method of the configured `AuthorizationSerice`. See [Connecting GraphQLite to your framework's security module
+the `isAllowed` method of the configured `AuthorizationService`. See [Connecting GraphQLite to your framework's security module
 ](implementing-security.md) for more details