Explicitly mark figures as non-normative (#911)

See #638

index.bs

@@ -3338,11 +3338,12 @@ The W3C Recommendation Track</h3>
 	A <dfn export lt="W3C Recommendation Track document | REC Track document | Recommendation Track document | Recommendation-track document">W3C Recommendation Track document</dfn>
 	is any document whose current status is one of the four in the numbered list above.
 
-	<div role="region" aria-label="Basic W3C Recommendation Track">
+	<figure>
 		<pre class=include-raw>
 			path: basic-rec-track.svg
 		</pre>
-	</div>
+		<figcaption>Non-Normative Summary of the [=Recommendation Track=]</figcaption>
+	</figure>
 
 	This Process defines certain [=Recommendation Track=] publications as <dfn>Patent Review Drafts</dfn>.
 	Under the 2004 Patent Policy (and its 2017 update) [[!PATENT-POLICY-2004]],
@@ -4309,11 +4310,12 @@ Abandoning a W3C Recommendation</h5>
 	a [=Rescinded Recommendation=] ceases to be in effect
 	and no new licenses are granted under the Patent Policy.
 
-	<div role="region" aria-label="Retiring a W3C Recommendation">
+	<figure>
 		<pre class=include-raw>
 			path: retiring-rec.svg
 		</pre>
-	</div>
+		<figcaption>Non-Normative Summary of the Paths to Retiring a W3C Recommendation</figcaption>
+	</figure>
 
 <h5 id="deactivation">
 Process for Rescinding, Obsoleting, Superseding, Restoring a Recommendation</h5>