Update 2-ui/1-document/06-dom-attributes-and-properties/article.md

Co-authored-by: joaquinelio <joaquinelio@gmail.com>

Author: vplentinax

2-ui/1-document/06-dom-attributes-and-properties/article.md

@@ -40,7 +40,7 @@ Element.prototype.sayHi = function() {
   alert(`Hola, yo soy ${this.tagName}`);
 };
 
-document.documentElement.sayHi(); // Hola, yo soy
+document.documentElement.sayHi(); // Hola, yo soy HTML
 document.body.sayHi(); // Hola, yo soy BODY
 ```