Slight rewrite to Silver addition to Challenge #4.

conformance-challenges/index.html

@@ -361,7 +361,7 @@ <h2>Challenge #4: Non-Web Information and Communications Technologies </h2>
 	            <div class="silver">
 						                    <h3>Silver Research Findings</h3>
 
-	    <p>Silver needs to expand the scope beyond web to include apps,
+	    <p>Silver research identified the need to expand the scope beyond web to include apps,
 	    documents, authoring, user agents, wearables, kiosks, IoT, VR, etc.
 	    and be inclusive of more disabilities. (UX Professionals Use of
 	    WCAG: Analysis) * Accessibility Supported allows inadequate