Fix CustomHTMLHeadElement to have the correct name
Fix CustomHTMLHeadElement to have the correct name

valmzetvn/html-as-custom-elements,domenic/html-as-custom-elements,valmzetvn/html-as-custom-elements,domenic/html-as-custom-elements,valmzetvn/html-as-custom-elements,zenorocha/html-as-custom-elements,zenorocha/html-as-custom-elements,domenic/html-as-custom-elements