add short flag for force

Signed-off-by: allencloud <allen.sun@daocloud.io>

cli/command/node/remove.go

@@ -29,7 +29,7 @@ func newRemoveCommand(dockerCli *command.DockerCli) *cobra.Command {
 		},
 	}
 	flags := cmd.Flags()
-	flags.BoolVar(&opts.force, "force", false, "Force remove a node from the swarm")
+	flags.BoolVarP(&opts.force, "force", "f", false, "Force remove a node from the swarm")
 	return cmd
 }
 

cli/command/swarm/leave.go

@@ -27,7 +27,7 @@ func newLeaveCommand(dockerCli *command.DockerCli) *cobra.Command {
 	}
 
 	flags := cmd.Flags()
-	flags.BoolVar(&opts.force, "force", false, "Force this node to leave the swarm, ignoring warnings")
+	flags.BoolVarP(&opts.force, "force", "f", false, "Force this node to leave the swarm, ignoring warnings")
 	return cmd
 }
 

docs/reference/commandline/node_rm.md

@@ -16,7 +16,7 @@ keywords: "node, remove"
 # node rm
 
 ```markdown
-Usage:  docker node rm [OPTIONS] NODE [NODE...]
+Usage:	docker node rm [OPTIONS] NODE [NODE...]
 
 Remove one or more nodes from the swarm
 
@@ -24,8 +24,8 @@ Aliases:
   rm, remove
 
 Options:
-      --force  Force remove a node from the swarm
-      --help   Print usage
+  -f, --force   Force remove a node from the swarm
+      --help    Print usage
 ```
 
 When run from a manager node, removes the specified nodes from a swarm.

docs/reference/commandline/swarm_leave.md

@@ -16,12 +16,12 @@ keywords: "swarm, leave"
 # swarm leave
 
 ```markdown
-Usage:  docker swarm leave [OPTIONS]
+Usage:	docker swarm leave [OPTIONS]
 
-Leave the swarm (workers only).
+Leave the swarm (workers only)
 
 Options:
-      --force   Force this node to leave the swarm, ignoring warnings
+  -f, --force   Force this node to leave the swarm, ignoring warnings
       --help    Print usage
 ```