[css-scoping] Fix bikeshed critical errors

Author: kojiishi

css-scoping/Overview.bs

@@ -10,7 +10,7 @@ Editor: Tab Atkins Jr., Google, http://xanthir.com/contact/
 Editor: Elika J Etemad, Invited Expert, http://fantasai.inkedblade.net/contact
 Abstract: This specification defines various scoping/encapsulation mechanisms for CSS, including scoped styles and the ''@scope'' rule, Shadow DOM selectors, and page/region-based styling.
 Ignored Terms: content, shadowroot, scoped
-Link Defaults: selectors (dfn) child combinator, html5 (element) style
+Link Defaults: selectors (dfn) child combinator, html (element) style
 Issue Tracking: Bugzilla https://www.w3.org/Bugs/Public/buglist.cgi?component=Scoping&list_id=47685&product=CSS&resolution=---
 </pre>
 
@@ -230,7 +230,7 @@ Shadow Encapsulation</h2>
 	An <a>insertion point</a> must not generate any boxes.
 	Instead, its <a>distributed nodes</a> generate boxes as normal,
 	as if they all replaced the <a>insertion point</a> in-place.
-	<span class='note'>(Akin to the behavior of ''display-outside: contents''.)</span>
+	<span class='note'>(Akin to the behavior of 'display-outside: contents'.)</span>
 
 <h3 id='selectors-data-model'>
 Shadow DOM Selection Model</h3>