N and N 4.30: Fix broken links (#1567)

eclipse.platform.common/bundles/org.eclipse.platform.doc.user/whatsNew/platform_whatsnew.html

@@ -38,7 +38,7 @@ <h2>What's New in Eclipse 4.30 (Platform)</h2>
     <li><a href="#GeneralUpdates">General Updates</a></li>
   </ul>
   <p>Plug-in developers will also be interested in the corresponding <a href=
-  "../../org.eclipse.platform.doc.isv/whatsNew/platform_isv_whatsnew.html">What's new</a> document in the plug-in
+  "../../org.eclipse.pde.doc.user/whatsNew/pde_whatsnew.html">What's new</a> document in the plug-in
   developer's guide.</p>
   <p>We also recommend to read the <a href="../tips/platform_tips.html">Tips and Tricks</a>.</p><br />
 <!-- ****************** START OF N&N TABLE ****************** -->
@@ -91,7 +91,7 @@ <h2>Security</h2>
     <!-- https://github.com/eclipse-equinox/p2/issues/365 -->
     <td class="title">p2 Director Application Security</td>
     <td class="content">
-    To provide similar security controls as <a href="../4.28/platform.php#Security">available in the IDE</a>,
+    To provide similar security controls as <a href="https://eclipse.dev/eclipse/news/4.28/platform.php#Security" target="_blank">available in the IDE</a>,
     the following command-line arguments are now supported the <a href="https://help.eclipse.org/latest/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Fguide%2Fp2_director.html" target="_blank">p2 director application</a>:
     <p></p>
     <dl>