[css-syntax] bikeshed fixes

Author: tabatkins

css-syntax/Overview.bs

@@ -3005,9 +3005,9 @@ Defining Grammars for Rules and Other Values</h2>
 	Several types of tokens are written literally, without quotes:
 
 	<ul>
-		<li><<ident-token>>s (such as ''auto'', ''disc'', etc), which are simply written as their value.
-		<li><<at-keyword-token>>s, which are written as an @ character followed by the token's value, like "@media".
-		<li><<function-token>>s, which are written as the function name followed by a ( character, like "translate(".
+		<li><<ident-token>>s (such as <code>auto</code>, <code>disc</code>, etc), which are simply written as their value.
+		<li><<at-keyword-token>>s, which are written as an @ character followed by the token's value, like <code>@media</code>.
+		<li><<function-token>>s, which are written as the function name followed by a ( character, like <code>translate(</code>.
 		<li>The <<colon-token>> (written as <code>:</code>), <<comma-token>> (written as <code>,</code>), <<semicolon-token>> (written as <code>;</code>), <a href="#tokendef-open-paren">&lt;(-token></a>, <a href="#tokendef-close-paren">&lt;)-token></a>, <a href="#tokendef-open-curly">&lt;{-token></a>, and <a href="#tokendef-close-curly">&lt;}-token></a>s.
 	</ul>