Simplify the regular expression in `CommaRule.validateFile(_:)`
Simplify the regular expression in `CommaRule.validateFile(_:)`

realm/SwiftLint,lyft/SwiftLint,cdillard/SwiftLint,Johnykutty/SwiftLint,firebase/SwiftLint,firebase/SwiftLint,realm/SwiftLint,victorpimentel/SwiftLint,jeffreybergier/SwiftLint,firebase/SwiftLint,realm/SwiftLint,firebase/SwiftLint,wfleming/SwiftLint,Johnykutty/SwiftLint,jeffreybergier/SwiftLint,cdillard/SwiftLint,lyft/SwiftLint,lyft/SwiftLint,Johnykutty/SwiftLint,jeffreybergier/SwiftLint,wfleming/SwiftLint,victorpimentel/SwiftLint,realm/SwiftLint,jeffreybergier/SwiftLint,victorpimentel/SwiftLint,Johnykutty/SwiftLint,victorpimentel/SwiftLint,lyft/SwiftLint