etcdctl/ctlv3: fix spell errors

etcdctl/ctlv3/command/del_command.go

@@ -60,7 +60,7 @@ func getDelOp(cmd *cobra.Command, args []string) (string, []clientv3.OpOption) {
 	key := args[0]
 	if len(args) > 1 {
 		if delPrefix {
-			ExitWithError(ExitBadArgs, fmt.Errorf("too many arguments, only accept one arguement when `--prefix` is set."))
+			ExitWithError(ExitBadArgs, fmt.Errorf("too many arguments, only accept one argument when `--prefix` is set."))
 		}
 		opts = append(opts, clientv3.WithRange(args[1]))
 	}

etcdctl/ctlv3/command/get_command.go

@@ -86,7 +86,7 @@ func getGetOp(cmd *cobra.Command, args []string) (string, []clientv3.OpOption) {
 	key := args[0]
 	if len(args) > 1 {
 		if getPrefix || getFromKey {
-			ExitWithError(ExitBadArgs, fmt.Errorf("too many arguments, only accept one arguement when `--prefix` or `--from-key` is set."))
+			ExitWithError(ExitBadArgs, fmt.Errorf("too many arguments, only accept one argument when `--prefix` or `--from-key` is set."))
 		}
 		opts = append(opts, clientv3.WithRange(args[1]))
 	}

etcdctl/ctlv3/command/lock_command.go

@@ -37,7 +37,7 @@ func NewLockCommand() *cobra.Command {
 
 func lockCommandFunc(cmd *cobra.Command, args []string) {
 	if len(args) != 1 {
-		ExitWithError(ExitBadArgs, errors.New("lock takes one lock name arguement."))
+		ExitWithError(ExitBadArgs, errors.New("lock takes one lock name argument."))
 	}
 	c := mustClientFromCmd(cmd)
 	if err := lockUntilSignal(c, args[0]); err != nil {

etcdctl/ctlv3/command/put_command.go

@@ -42,7 +42,7 @@ Insert '--' for workaround:
 $ put <key> -- <value>
 $ put -- <key> <value>
 
-If <value> isn't given as command line arguement, this command tries to read the value from standard input.
+If <value> isn't given as command line argument, this command tries to read the value from standard input.
 For example,
 $ cat file | put <key>
 will store the content of the file to <key>.