use uppercase letters for flag usage

Signed-off-by: panguicai008 <guicai.pan@daocloud.io>

cmd/ctr/commands/run/run.go

@@ -87,7 +87,7 @@ func parseMountFlag(m string) (specs.Mount, error) {
 // Command runs a container
 var Command = cli.Command{
 	Name:           "run",
-	Usage:          "run a container",
+	Usage:          "Run a container",
 	ArgsUsage:      "[flags] Image|RootFS ID [COMMAND] [ARG...]",
 	SkipArgReorder: true,
 	Flags: append([]cli.Flag{

cmd/ctr/commands/run/run_windows.go

@@ -36,7 +36,7 @@ import (
 var platformRunFlags = []cli.Flag{
 	cli.BoolFlag{
 		Name:  "isolated",
-		Usage: "run the container with vm isolation",
+		Usage: "Run the container with vm isolation",
 	},
 }