--- a/parser/htmlparser/public/nsHTMLTagList.h
+++ b/parser/htmlparser/public/nsHTMLTagList.h
@@ -2,27 +2,27 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 // IWYU pragma: private, include "nsHTMLTags.h"
 
 /******
 
-  This file contains the list of all HTML tags 
-  See nsHTMLTags.h for access to the enum values for tags
+  This file contains the list of all HTML tags.
+  See nsHTMLTags.h for access to the enum values for tags.
 
   It is designed to be used as inline input to nsHTMLTags.cpp and
   nsHTMLContentSink *only* through the magic of C preprocessing.
 
   All entries must be enclosed in the macro HTML_TAG which will have cruel
-  and unusual things done to it
+  and unusual things done to it.
 
   It is recommended (but not strictly necessary) to keep all entries
-  in alphabetical order
+  in alphabetical order.
 
   The first argument to HTML_TAG is both the enum identifier of the
   property and the string value. The second argument is the "creator"
   method of the form NS_New$TAGNAMEElement, that will be used by
   nsHTMLContentSink.cpp to create a content object for a tag of that
   type. Use NOTUSED, if the particular tag has a non-standard creator.
 
   The HTML_OTHER macro is for values in the nsHTMLTag enum that are