Build: (c03b7c2) Merge pull request #331 from kubevirt/gh_actions/update_metrics_docs

Update metrics documentation

Author: sradco

metrics.md

@@ -65,6 +65,7 @@ The following table contains all metrics from operators listed above. Each row r
 | kubevirt | `kubevirt_vm_running_status_last_transition_timestamp_seconds` | Counter | Virtual Machine last transition timestamp to running status |
 | kubevirt | `kubevirt_vm_starting_status_last_transition_timestamp_seconds` | Counter | Virtual Machine last transition timestamp to starting status |
 | kubevirt | `kubevirt_vm_vnic_info` | Gauge | Details of Virtual Machine (VM) vNIC interfaces, such as vNIC name, binding type, network name, and binding name for each vNIC defined in the VM's configuration |
+| kubevirt | `kubevirt_vmi_contains_ephemeral_hotplug_volume` | Gauge | Reported only for VMIs that contain an ephemeral hotplug volume |
 | kubevirt | `kubevirt_vmi_cpu_system_usage_seconds_total` | Counter | Total CPU time spent in system mode |
 | kubevirt | `kubevirt_vmi_cpu_usage_seconds_total` | Counter | Total CPU time spent in all modes (sum of both vcpu and hypervisor usage) |
 | kubevirt | `kubevirt_vmi_cpu_user_usage_seconds_total` | Counter | Total CPU time spent in user mode |