post-merge (unwiredben) update html5 structural tests

to be sure the previous test incarnations continued to work.

test/cases/html5-strutural-tags.html

@@ -9,6 +9,10 @@
 
 <nav>navigation</nav>
 
+<article>read me</article>
+
+<aside>ignore me</aside>
+
 <article>read
 me</article>
 

test/cases/html5-strutural-tags.md

@@ -5,6 +5,8 @@ These HTML5 tags should pass through just fine.
 <header>head</header>
 <footer>footsies</footer>
 <nav>navigation</nav>
+<article>read me</article>
+<aside>ignore me</aside>
 <article>read
 me</article>
 <aside>