rubocop_todo references cop configuration but could be more useful

[maxjacobson]

An example excerpt from my .rubocop_todo.yml

# Offense count: 151                                                                
# Cop supports --auto-correct.                                                      
# Configuration parameters: EnforcedStyle, SupportedStyles.                         
Style/MultilineOperationIndentation:                                                
  Enabled: false                                                                    

The "Configuration parameters" line could be more useful, I think. I don't really care that it has a SupportedStyles configuration. However, I'm very interested that it has an EnforcedStyle parameter, but I need to hunt through the rubocop source code to determine what the valid options are to choose from. What do you think about including those options here?

[jonas054]

Sounds like a good idea. We can't go by name because these parameters are not always called SupportedStyles, but if we list the elements for all parameters whose type is Array, I think it will be an improvement.

# Offense count: 151
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle, SupportedStyles.
# SupportedStyles: aligned, indented
Style/MultilineOperationIndentation:
  Enabled: false

[maxjacobson]

That sounds great to me

[alexdowad]

Just opened a PR which implements @jonas054's suggestion.

[maxjacobson]

🙏 sweet!