Editorial: link allowlist self properly.

index.html

@@ -2315,7 +2315,7 @@ <h2>
         This specification defines a [=policy-controlled feature=] identified
         by the string <dfn class="permission">"payment"</dfn>
         [[permissions-policy]]. Its [=policy-controlled feature/default
-        allowlist=] is '<code>self</code>'.
+        allowlist=] is [=default allowlist/'self'=].
       </p>
       <aside class="note">
         <p>