Use <code> for references to a CDDL type (#455)

* Use `<code>` for references to a CDDL type

The spec wrapped the CDDL result type of the Set Permission command in a
`<pre class="cddl">` block, even though the return type is actually a reference
to a CDDL type defined in WebDriver BiDi.

This update wraps the block into `<code>` instead, following similar
conventions used for IDL.

Context for the request is that CDDL definitions defined in specs are now
extracted and exposed in Webref to ease validation and integration in tools:
https://github.com/w3c/webref/tree/main/ed/cddl

* Fix cross-reference to "accelerometer" permission

The quotes are now included in the definition.

index.html

@@ -1445,9 +1445,9 @@ <h6 id="webdriver-bidi-command-permissions-setPermission">
                   Result Type
                 </dt>
                 <dd>
-                  <pre class="cddl">
+                  <code>
                     EmptyResult
-                  </pre>
+                  </code>
                 </dd>
               </dl>
               <div class="algorithm" data-algorithm=
@@ -1788,7 +1788,7 @@ <h2>
           </tr>
           <tr data-cite="orientation-event">
             <td class="string-token">
-              "[=accelerometer=]"
+              [="accelerometer"=]
             </td>
             <td class="is-policy-controlled">
               YES