[css-text-4] Fix property value range annotation

Author: cdoublev

css-text-4/Overview.bs

@@ -6752,7 +6752,7 @@ Joint Wrapping Control: the 'text-wrap' shorthand property</h4>
 
 	<pre class="propdef">
 	Name: text-wrap
-	Value: <'text-wrap-mode'> || <'text-wrap-style'>
+	Value: <<'text-wrap-mode'>> || <<'text-wrap-style'>>
 	Initial: wrap
 	Applies to: see individual properties
 	Inherited: see individual properties