Sync the Presentation API interfaces with the spec

Source/modules/presentation/PresentationAvailability.idl

Index: Source/modules/presentation/PresentationAvailability.idl
diff --git a/Source/modules/presentation/PresentationAvailability.idl b/Source/modules/presentation/PresentationAvailability.idl
index 64a323e89d1293eb0d6b16efe1179473368150c5..4afd903232fe545d4d0aa33e62c05c60d691b8bd 100644
--- a/Source/modules/presentation/PresentationAvailability.idl
+++ b/Source/modules/presentation/PresentationAvailability.idl
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// https://w3c.github.io/presentation-api/#interface-availability
+// https://w3c.github.io/presentation-api/#interface-presentationavailability
 
 [
     ActiveDOMObject,
@@ -10,6 +10,5 @@
     RuntimeEnabled=Presentation,
 ] interface PresentationAvailability : EventTarget {
     readonly attribute boolean value;
-
     attribute EventHandler onchange;
 };