fix(types): adds TargetCaseType[] for CaseRuleConfig

Author: chanceaclark

@commitlint/types/src/rules.ts

@@ -77,7 +77,7 @@ export type RuleConfig<
 
 export type CaseRuleConfig<V = RuleConfigQuality.User> = RuleConfig<
 V,
-TargetCaseType
+TargetCaseType | TargetCaseType[]
 >;
 export type LengthRuleConfig<V = RuleConfigQuality.User> = RuleConfig<
 V,