Fix /docs/notifications path

Author: TuvalSimha

website/src/pages/docs/migration-guides/github.mdx

@@ -83,7 +83,7 @@ For example, `schema.graphql` points to a file in the root directory of a reposi
 ### Schema Change Notifications
 
 To stay up to date with changes in your GraphQL Schema and to receive notifications on Slack,
-Discord or even via WebHooks, read the ["Notifications"](../essentials/notifications) chapter.
+Discord or even via WebHooks, read the ["Notifications"](/docs/notifications) chapter.
 
 ### Annotations