Update getAncestors.md

snippets/getAncestors.md

@@ -5,7 +5,7 @@ tags: browser,beginner
 
 Returns all the ancestors of an element from the document root to the given element.
 
-- Use a `Node.parentNode` and a `while` loop to move up the ancestor tree of the element.
+- Use `Node.parentNode` and a `while` loop to move up the ancestor tree of the element.
 - Use `Array.prototype.unshift()` to add each new ancestor to the start of the array.
 
 ```js