Link Scanning API to new "bluetooth" permission definition (#578)

scanning.bs

@@ -57,9 +57,10 @@ spec: webidl
 spec:web-bluetooth
     type: dfn
         text: read only arraybuffer
+    type: permission
+        text: "bluetooth"
 spec: permissions-1
     type: enum-value
-        text: "bluetooth"
         text: "denied"
         text: "granted"
 </pre>
@@ -675,7 +676,7 @@ settings object=] is no longer [=fully active=], it must run these steps:
               Note: the user's <a href="#scanning-permission">permission to scan</a>
               likely indicates that
               they intend newly-discovered devices to appear in
-              {{"bluetooth"}}'s <a>extra permission data</a>,
+              <a permission>"bluetooth"</a>'s <a>extra permission data</a>,
               but possibly with {{AllowedBluetoothDevice/mayUseGATT}} set to `false`.
             </li>
             <li>