Mention that Markdown works on Write.as posts now

index.html

@@ -267,7 +267,7 @@
 		<h2>Footnotes</h2>
 
 		<p>
-		<a name="f1"><sup>1</sup></a> Markdown is only supported on Write.as blog posts.
+		<a name="f1"><sup>1</sup></a> Markdown supported automatically on Write.as blog posts, or by adding <code>.md</code> to a post URL.
 		</p>
 
 		<p>