Update README.md

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Author: mudetroit

README.md

@@ -7,7 +7,7 @@ A GitHub action that notifies deploys to [Rollbar](https://rollbar.com).
 
 ## Usage
 
-This action requires that you set the `ROLLBAR_ACCESS_TOKEN` environment variable with a token that must have the [`post_server_item`](https://explorer.docs.rollbar.com/#section/Authentication/Project-access-tokens) scope.
+This action requires that you set the `ROLLBAR_ACCESS_TOKEN` environment variable with a token that must have the [`post_server_item`](https://docs.rollbar.com/reference/create-item) scope.
 You can find it under your project's settings in the Project access token section.
 
 When notifiying deploys in two stages, for sending to Rollbar when a deploy starts and the status of its result (succeeded or failed ) you need