removing accidental markup (#2979)

Author: dret

css-box-3/Overview.html

@@ -287,7 +287,7 @@ <h2 class="no-num no-toc no-ref heading settled" id="abstract"><span class="cont
 defined elsewhere. </p>
    <p>In CSS level 3, boxes may contain either horizontal or vertical text.
 Different orientations can be mixed.
-]]> <a href="http://www.w3.org/TR/CSS/">CSS</a> is a language for describing the rendering of structured documents
+<a href="http://www.w3.org/TR/CSS/">CSS</a> is a language for describing the rendering of structured documents
 (such as HTML and XML)
 on screen, on paper, in speech, etc. </p>
   </div>
@@ -6042,4 +6042,4 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     }
 
 });
-</script>
+</script>