minor fixes

Author: iliakan

2-ui/1-document/02-dom-nodes/article.md

@@ -160,7 +160,7 @@ let node5 = {"name":"TABLE","nodeType":1,"children":[{"name":"TBODY","nodeType":
 drawHtmlTree(node5,  'div.domtree', 600, 200);
 </script>
 
-You see? The `<tbody>` appeared out of nowhere. You should keep this in mind while working with tables to avoid surprises.
+You see? The `<tbody>` appeared out of nowhere. We should keep this in mind while working with tables to avoid surprises.
 ````
 
 ## Other node types