removeAttr: update note on support in IE

Fixes gh-642
Closes gh-652

Author: arthurvr

entries/removeAttr.xml

@@ -10,7 +10,7 @@
   <desc>Remove an attribute from each element in the set of matched elements.</desc>
   <longdesc>
     <p>The <code>.removeAttr()</code> method uses the JavaScript <code>removeAttribute()</code> function, but it has the advantage of being able to be called directly on a jQuery object and it accounts for different attribute naming across browsers.</p>
-    <p><strong>Note:</strong> Removing an inline <code>onclick</code> event handler using <code>.removeAttr()</code> doesn't achieve the desired effect in Internet Explorer 6, 7, or 8. To avoid potential problems, use <code>.prop()</code> instead:</p>
+    <p><strong>Note:</strong> Removing an inline <code>onclick</code> event handler using <code>.removeAttr()</code> doesn't achieve the desired effect in Internet Explorer 8, 9 and 11. To avoid potential problems, use <code>.prop()</code> instead:</p>
     <pre><code>
 $element.prop( "onclick", null );
 console.log( "onclick property: ", $element[ 0 ].onclick );