message: Remove implicit returns
diff: @@ -137,14 +137,14 @@ For example, if you would like to allow users to access files within a folder na
  ``` yaml
  functions:
  - isOwner: '!!request.auth && request.auth["user-id"] === userId'
  + isOwner: 'return !!request.auth && request.auth["user-id"] === userId'
  ```
  This function uses a variable, called `userId`, which must be passed in by the rule from a [dynamic path](#folder-paths):
  ``` yaml
  functions:
  - isOwner: '!!request.auth && request.auth["user-id"] === userId'
  + isOwner: 'return !!request.auth && request.auth["user-id"] === userId'
  paths:
  /:userId/:
  list: isOwner(userId)
  