fix(rules): fix subject-full-stop rule config value type (#2534)

Author: xeptore

@commitlint/types/src/rules.ts

@@ -114,7 +114,7 @@ export type RulesConfig<V = RuleConfigQuality.User> = {
 	'signed-off-by': RuleConfig<V>;
 	'subject-case': CaseRuleConfig<V>;
 	'subject-empty': RuleConfig<V>;
-	'subject-full-stop': RuleConfig<V>;
+	'subject-full-stop': RuleConfig<V, string>;
 	'subject-max-length': LengthRuleConfig<V>;
 	'subject-min-length': LengthRuleConfig<V>;
 	'type-case': CaseRuleConfig<V>;