Apply suggestion from @jcsteh

Co-authored-by: James Teh <jamie@jantrid.net>

Author: spectranaut

index.html

@@ -11178,7 +11178,7 @@ <h2>Accessibility</h2>
 
 <p> An <dfn>accessibility ID</dfn> is a string value representing a handle to an <a>accessibility node</a> in a specific WebDriver session.
 
-<p> An <dfn>accessibility node</dfn> is a platform-independent, implementation-defined node in the platform-independent, implementation-defined accessibility tree. The platform-independent, implementation defined accessibility tree is built from the DOM tree for the purposes of interacting with the web page via an <a>accessibility API</a>. Accessibility nodes might exist in this tree for which there is no DOM element back it (for example, one might be create to represent a CSS pseudo element). Additionally, an accessibility node might not be created for every DOM node (for example, if something is intentionally hidden from accessibility APIs using <a>aria-hidden</a>). See the ARIA definition of the <a>accessibility tree</a> for more information.
+<p> An <dfn>accessibility node</dfn> is a platform-independent, implementation-defined node in the platform-independent, implementation-defined accessibility tree. The platform-independent, implementation defined accessibility tree is built from the DOM tree for the purposes of interacting with the web page via an <a>accessibility API</a>. Accessibility nodes might exist in this tree for which there is no DOM element back it (for example, one might be created to represent a CSS pseudo element). Additionally, an accessibility node might not be created for every DOM node (for example, if something is intentionally hidden from accessibility APIs using <a>aria-hidden</a>). See the ARIA definition of the <a>accessibility tree</a> for more information.
 
 <p> <dfn>Accessibility properties</dfn> is a JSON <a>Object</a> that contains the relevant <a>computed accessibility properties</a> of an <a>accessibility node</a>, as well as the following properties: