Update common files.

Author: gkellogg

common/terms.html

@@ -226,7 +226,7 @@
     A <a>list object</a> is a <a>dictionary</a> that has a <code>@list</code> key.
     It may also have an <code>@index</code> key, but no other members.</dd>
   <dt><dfn>literal</dfn></dt><dd>
-    An <a>object</a> expressed as a value such as a string, number or in expanded form.</dd>
+    An <a>object</a> expressed as a value such as a string or number, or in expanded form as a <a>value object</a>.</dd>
   <dt><dfn>local context</dfn></dt><dd>
     A <a>context</a> that is specified with a <a>dictionary</a>,
     specified via the <code>@context</code> <a>keyword</a>.</dd>

common/typographical-conventions.html

@@ -39,7 +39,7 @@
 <p class="note">Notes are in light green boxes with a green left border and with a "Note" header in green.
   Notes are always informative.</p>
 
-<pre class="example">
+<pre class="example nohighlight">
   Examples are in light khaki boxes, with khaki left border,
   and with a numbered "Example" header in khaki.
   Examples are always informative. The content of the example is in monospace font and may be syntax colored.