Bug 566837: [Dark theme] What is new is not styled in the help

Change-Id: I93a271996fc3be51ec1e6a3cb27f48a91b646eed
diff --git a/bundles/org.eclipse.pde.doc.user/whatsNew/pde_whatsnew.html b/bundles/org.eclipse.pde.doc.user/whatsNew/pde_whatsnew.html
index a9cf369..dfb0245 100644
--- a/bundles/org.eclipse.pde.doc.user/whatsNew/pde_whatsnew.html
+++ b/bundles/org.eclipse.pde.doc.user/whatsNew/pde_whatsnew.html
@@ -4,7 +4,7 @@
 <meta name="copyright" content="Copyright (c) Eclipse contributors and others 2020. This page is made available under license. For full details see the LEGAL in the documentation book that contains this page."/>
 <meta http-equiv="Content-Language" content="en-us"/>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<link rel="STYLESHEET" href="news.css" type="text/css"/>
+<link rel="STYLESHEET" href="../book.css" charset="ISO-8859-1" type="text/css"/>
 <style type="text/css">
 body {max-width: 900px;}
 table.news col.title {width: 30%;}
diff --git a/bundles/org.eclipse.platform.doc.user/whatsNew/platform_whatsnew.html b/bundles/org.eclipse.platform.doc.user/whatsNew/platform_whatsnew.html
index ea4f085..0f44f60 100644
--- a/bundles/org.eclipse.platform.doc.user/whatsNew/platform_whatsnew.html
+++ b/bundles/org.eclipse.platform.doc.user/whatsNew/platform_whatsnew.html
@@ -4,7 +4,7 @@
 <meta name="copyright" content="Copyright (c) Eclipse contributors and others 2020. This page is made available under license. For full details, see the LEGAL section in the documentation that contains this page."/>
 <meta http-equiv="Content-Language" content="en-us"/>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<link rel="STYLESHEET" href="news.css" type="text/css"/>
+<link rel="STYLESHEET" href="../book.css" charset="ISO-8859-1" type="text/css"/>
 <style type="text/css">
 body {max-width: 900px;}
 table.news col.title {width: 30%;}