docs: clarify configure show command help

cmd/cli/commands/configure_show.go

@@ -5,31 +5,37 @@
 	"fmt"
 
 	"github.com/docker/model-runner/cmd/cli/commands/completion"
+
 	"github.com/spf13/cobra"
 )
 
 func newConfigureShowCmd() *cobra.Command {
 	c := &cobra.Command{
 		Use:   "show [MODEL]",
-		Short: "Show model configurations",
+		Short: "Show effective runtime configuration for models",
+		Long:  "Show the effective runtime configuration that Docker Model Runner has stored for one model or all models.",
 		Args:  cobra.MaximumNArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			var modelFilter string
 			if len(args) > 0 {
 				modelFilter = args[0]
 			}
+
 			configs, err := desktopClient.ShowConfigs(modelFilter)
 			if err != nil {
 				return err
 			}
+
 			jsonResult, err := json.MarshalIndent(configs, "", "  ")
 			if err != nil {
 				return fmt.Errorf("failed to marshal configs to JSON: %w", err)
 			}
+
 			cmd.Println(string(jsonResult))
 			return nil
 		},
 		ValidArgsFunction: completion.ModelNames(getDesktopClient, 1),
 	}
+
 	return c
 }