commented out confusing text

Author: howcom

css3-multicol/Overview.src.html

@@ -1402,8 +1402,8 @@ <h3>Overflow outside multicol elements</h3>
 <ul>
 
 <li>Constrained column height. A declaration that constrains the
-column height (e.g., on 'height') must be honored, if possible. In
-paged media, the height is constrained by the size of the page.
+column height (e.g., using 'height') must be honored, if possible. In
+paged media, the column height is constrained by the size of the page.
 
 <li>Explicit column breaks. Explicit column breaks may create more
 columns than there is room for inside the multicol element.