add missing onlineHelp links

for:
* dc/Cluster
* node/Certificates
* qemu/CloudInit

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

www/manager6/dc/Cluster.js

@@ -25,6 +25,7 @@ Ext.define('PVE.ClusterAdministration', {
     xtype: 'pveClusterAdministration',
 
     title: gettext('Cluster Administration'),
+    onlineHelp: 'chapter_pvecm',
 
     border: false,
     defaults: { border: false },

www/manager6/node/Certificates.js

@@ -2,6 +2,8 @@ Ext.define('PVE.node.CertificateView', {
     extend: 'Ext.container.Container',
     xtype: 'pveCertificatesView',
 
+    onlineHelp: 'sysadmin_certificate_management',
+
     mixins: ['Proxmox.Mixin.CBind' ],
 
     items: [

www/manager6/qemu/CloudInit.js

@@ -2,6 +2,8 @@ Ext.define('PVE.qemu.CloudInit', {
     extend: 'Proxmox.grid.PendingObjectGrid',
     xtype: 'pveCiPanel',
 
+    onlineHelp: 'qm_cloud_init',
+
     tbar: [
 	{
 	    xtype: 'proxmoxButton',