Fix comment about swap limit of docker update
The description "set `-1` to disable swap" is wrong, `build`,
`create` and `run` already fixed, we need to fix `update` as well.
@@ -23,7 +23,7 @@ parent = "smn_cli"
--cpuset-mems="" Memory nodes (MEMs) in which to allow execution (0-3, 0,1)
-m, --memory="" Memory limit
--memory-reservation="" Memory soft limit
- --memory-swap="" Total memory (memory + swap), '-1' to disable swap
+ --memory-swap="" A positive integer equal to memory plus swap. Specify -1 to enable unlimited swap
--kernel-memory="" Kernel memory limit: container must be stopped
The `docker update` command dynamically updates container resources. Use this
