Fix circular definition (#1918)

Signed-off-by: Euclid Ye <euclid.ye@huawei.com>

Author: yezhizhen

index.html

@@ -4583,8 +4583,7 @@ <h3>Interactability</h3>
  that is the intersection between
  the element&apos;s first {{DOMRect}} of {{Element/getClientRects()}}
  and the <a>initial viewport</a>.
- Given an <a>element</a> that is known to be <a>in view</a>,
- it can be calculated this way:
+ It can be calculated this way:
 
 <ol>
  <li><p>Let <var>rectangle</var> be