Fix: Glances widget display (#3164)

Co-Authored-By: shamoon <4887959+shamoon@users.noreply.github.com>

docs/widgets/services/glances.md

@@ -19,6 +19,8 @@ widget:
   password: pass # optional if auth enabled in Glances
   metric: cpu
   diskUnits: bytes # optional, bytes (default) or bbytes. Only applies to disk
+  refreshInterval: 5000 # optional - in milliseconds, defaults to 1000 or more, depending on the metric
+  pointsLimit: 15 # optional, defaults to 15
 ```
 
 _Please note, this widget does not need an `href`, `icon` or `description` on its parent service. To achieve the same effect as the examples above, see as an example:_