update docs

Author: DoctorVin

docs/mctl.md

@@ -26,5 +26,6 @@ mctl is a CLI utility to interact with metal toolbox services
 * [mctl install](mctl_install.md)	 - Install actions
 * [mctl list](mctl_list.md)	 - List resources
 * [mctl power](mctl_power.md)	 - Execute server/bmc power, set next-boot commands: [on|off|cycle|reset|soft|status|bmc-reset|boot-pxe-persistent]
+* [mctl validate-firmware](mctl_validate-firmware.md)	 - validate a firmware set
 * [mctl version](mctl_version.md)	 - Print mctl version
 

docs/mctl_validate-firmware.md

@@ -0,0 +1,30 @@
+[Auto generated by spf13/cobra]: <>
+
+## mctl validate-firmware
+
+validate a firmware set
+
+```
+mctl validate-firmware -s SERVER --set-id SETID [flags]
+```
+
+### Options
+
+```
+  -h, --help                help for validate-firmware
+  -o, --output outputType   {json|text} (default json)
+  -s, --server string       [required] ID of the server
+      --set-id string       [required] ID of the firmware set
+```
+
+### Options inherited from parent commands
+
+```
+  -c, --config string   config file (default is $XDG_CONFIG_HOME/mctl/config.yml)
+      --reauth          re-authenticate with oauth services
+```
+
+### SEE ALSO
+
+* [mctl](mctl.md)	 - mctl is a CLI utility to interact with metal toolbox services
+