Rename rules to rule in ValidationRuleParser::parse() (#36414)
Rename rules to rule in ValidationRuleParser::parse() (#36414)

This matches the two callsites as well as the description.
JamesForks/framework,mul14/laravel-framework,bytestream/framework,crynobone/framework,mul14/laravel-framework,driesvints/framework,hafezdivandari/framework,mul14/laravel-framework,JamesForks/framework,morrislaptop/framework,stevebauman/framework,arturock/framework,driesvints/framework,notebowl/laravel-framework,samlev/framework,leo108/laravel_framework,lucasmichot/framework,arturock/framework,leo108/laravel_framework,arturock/framework,tomschlick/framework,samlev/framework,laravel/framework,crynobone/framework,tomschlick/framework,laravel/framework,lucasmichot/framework,notebowl/laravel-framework,mul14/laravel-framework,stevebauman/framework,dwightwatson/framework,dwightwatson/framework,hafezdivandari/framework,bytestream/framework,morrislaptop/framework,tomschlick/framework