ideas/mistakes: add animation-iteration-count

Author: fantasai

ideas/mistakes.txt

@@ -4,6 +4,7 @@ That should be corrected if anyone invents a time machine. :P
 
   * ''white-space: nowrap'' should be ''white-space: no-wrap''
     * and line wrapping behavior should not have been added to ''white-space''
+  * ''animation-iteration-count'' should just have been ''animation-count'' (like ''column-count''!)
   * ''vertical-align'' should not apply to table cells. Instead the CSS3 alignment properties should exist in Level 1.
   * ''vertical-align: middle'' should be ''text-middle'' or ''x-middle'' because it's not really in the middle, and such a name would better describes what it does.
   * Percentage heights should be calculated against ''fill-available'' rather than being undefined in auto situations.