text: Title: `BuiltIn.Log` documentation contains a defect
  Body: This is rather a typo more than a bug, but in the very last line of docstring for `BuiltIn.Log` Keyword, there is an annotation that one can choose between `type` and `log` formatter options. 
  Looking at `_get_formatter` method ( [HERE](https://github.com/robotframework/robotframework/blob/572f1e412a14c125e2098ce79e37dd45c2c0f990/src/robot/libraries/BuiltIn.py#LL3019) ), there is no such key in the dictionary. I believe that the latter option should be `len`.
  
  Robot Framework version: 6.0.2
  ![image](https://user-images.githubusercontent.com/102961347/220547427-40426d55-7d01-4187-b2f9-ce8d93aad566.png)
  
  