Fix 'docker stats' help message

Closes #10771

Signed-off-by: Doug Davis <dug@us.ibm.com>

api/client/commands.go

@@ -2701,7 +2701,7 @@ func (s *containerStats) Display(w io.Writer) error {
 }
 
 func (cli *DockerCli) CmdStats(args ...string) error {
-	cmd := cli.Subcmd("stats", "CONTAINER", "Display a live stream of one or more containers' resource usage statistics", true)
+	cmd := cli.Subcmd("stats", "CONTAINER [CONTAINER...]", "Display a live stream of one or more containers' resource usage statistics", true)
 	cmd.Require(flag.Min, 1)
 	utils.ParseFlags(cmd, args, true)
 

docs/man/docker-stats.1.md

@@ -7,7 +7,7 @@ docker-stats - Display a live stream of one or more containers' resource usage s
 # SYNOPSIS
 **docker stats**
 [**--help**]
-[CONTAINERS]
+CONTAINER [CONTAINER...]
 
 # DESCRIPTION
 

docs/sources/reference/commandline/cli.md

@@ -2023,7 +2023,7 @@ more details on finding shared images from the command line.
 
 ## stats
 
-    Usage: docker stats [CONTAINERS]
+    Usage: docker stats CONTAINER [CONTAINER...]
 
     Display a live stream of one or more containers' resource usage statistics