Correct IE note on removeAttr page

[markelog]

Talking about this one -

Note: Removing an inline onclick event handler using .removeAttr() doesn't achieve the desired effect in Internet Explorer 6, 7, or 8. To avoid potential problems, use .prop() instead:

Aside of removing Internet "Explorer 6, 7" for 3.0, it should include 9 and 11, but not 10.

[arthurvr]

@markelog I opened #652, could you review?

[arthurvr]

Merged in 3cec29b. GitHub didn't close the PR/issue since it's merged into the v3 branch, not master.