Editorial: Remove normative references to APNG and Editing.

sections/editing.include

@@ -1904,7 +1904,7 @@
   <dfn method for="Document" lt="queryCommandValue()|queryCommandValue(commandId)"><code>queryCommandValue()</code></dfn>
   methods, text selections, and the <dfn>delete the selection</dfn> algorithm are defined in the
   HTML Editing APIs specification. The interaction of editing and the undo/redo features in user
-  agents is defined by the UndoManager and DOM Transaction specification. [[!EDITING]] [[UNDO]]
+  agents is defined by the UndoManager and DOM Transaction specification. [[EDITING]] [[UNDO]]
 
 <h4 id="spelling-and-grammar-checking">Spelling and grammar checking</h4>
 

sections/infrastructure.include

@@ -1032,7 +1032,7 @@
       <p class="note">
         User agents are also encouraged to implement the features described in the
         <cite>HTML Editing APIs</cite> and <cite><code>UndoManager</code> and DOM Transaction</cite>
-        specifications. [[!EDITING]] [[UNDO]]
+        specifications. [[EDITING]] [[UNDO]]
       </p>
 
       The following parts of the Fullscreen specification are referenced from this specification, in

sections/semantics-embedded-content.include

@@ -834,7 +834,7 @@
     bitmaps (APNGs, animated GIFs), animated vector graphics (XML files with an SVG <a>document element</a>
     that use declarative SMIL animation), and so forth. However, these definitions preclude SVG
     files with script, multipage PDF files, interactive MNG files, HTML documents, plain text
-    documents, and so forth. [[!PNG]] [[!GIF]] [[!JPEG]] [[!PDF]] [[!XML]] [[!APNG]] [[!SVG11]] [[!MNG]]
+    documents, and so forth. [[!PNG]] [[!GIF]] [[!JPEG]] [[!PDF]] [[!XML]] [[APNG]] [[!SVG11]] [[!MNG]]
   </p>
 
   If the <code>srcset</code> attribute is present,