Merge pull request #3822 from RichardLoz/patch-1

update of the word "agregua" to "agrega"

Author: mluukkai

src/content/0/es/part0b.md

@@ -348,7 +348,7 @@ newElement = document.createElement('li')
 newElement.textContent = 'Page manipulation from console is easy'
 ```
 
-Y agregua el nuevo elemento li a la lista:
+Y agrega el nuevo elemento li a la lista:
 
 ```js
 list.appendChild(newElement)