fixed the name of the eclipse.appName system property

Author: azoitl

news/4.35/platform.html

@@ -76,7 +76,7 @@ <h2>General Updates </h2>
     </td>
   </tr>
   <tr id="sysPropAppName"> <!-- https://github.com/eclipse-platform/eclipse.platform.ui/pull/1902 -->
-      <td class="title">New System Property: appName</td>
+      <td class="title">New System Property: eclipse.appName</td>
       <td class="content">
         <p>
         This new system property allows to set the application name with which Eclipse is registered in the operating system.