generate man pages via sub command

Signed-off-by: Christian Goll <cgoll@suse.de>

internal/app/wwctl/genconf/completions/main.go

@@ -6,18 +6,18 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func CobraRunE(cmd *cobra.Command, args []string) error {
+func CobraRunE(cmd *cobra.Command, args []string) (err error) {
 	myArg := "bash"
 	if len(args) == 1 {
 		myArg = args[0]
 	}
 	switch myArg {
 	case "zsh":
-		cmd.GenZshCompletion(os.Stdout)
+		err = cmd.Parent().Parent().GenZshCompletion(os.Stdout)
 	case "fish":
-		cmd.GenFishCompletion(os.Stdout, true)
+		err = cmd.Parent().Parent().GenFishCompletion(os.Stdout, true)
 	default:
-		cmd.GenBashCompletion(os.Stdout)
+		err = cmd.Parent().Parent().GenBashCompletion(os.Stdout)
 	}
-	return nil
+	return
 }