Make pbe token creation more clear

docs/widgets/services/proxmoxbackupserver.md

@@ -3,6 +3,30 @@ title: Proxmox Backup Server
 description: Proxmox Backup Server Widget Configuration
 ---
 
+
+You will need to generate an API Token for new or an existing user. Here is an example of how to do this for a new user.
+
+1. Navigate to the Proxmox Backup portal, click on Access Control
+2. On the User Management tab, click the Add button
+   - User name: api-ro-user (or something informative)
+   - Realm: Proxmox Backup authentication
+   - Password: your choosing
+3. Go to API Token tab and click on the Add button
+4. Select the previously created user.
+5. Set the name to something informative, like api-homepage
+6. Go to Permissions tab and click on Add > User Permission
+   - Path: /
+   - User: user from bullet 2 above
+   - Role: Audit
+   - Propagated: checked
+7. Click again on Add > Api Token Permission
+   - Path: /
+   - User: token from bullet 5 above
+   - Role: Audit
+   - Propagated: checked
+
+Use `username@pbs!Token ID` as the `username` (e.g `api-ro-user@pbs!api-homepage`) setting and `token` as the `password` setting.
+
 Allowed fields: `["datastore_usage", "failed_tasks_24h", "cpu_usage", "memory_usage"]`.
 
 ```yaml