Disk Details, Nodes Compare dashboards: 'Disk Utilization' description is confusing

Impact on the user:

• User can be confused by explanation of the panel/metric

Steps to reproduce:

1. set up PMM. open Dashboards: Disk Details, Nodes Compare -> Element: Disk IO Utilization

Original report:
 

Dashboards: Disk Details, Nodes Compare
Element: Disk IO Utilization

It's required to fix description.
"percent of" -> "a percentage of"