Change all optional unit to [unit]

As suggested before, we should change every signal one.

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>

contrib/completion/fish/docker.fish

@@ -134,9 +134,9 @@ complete -c docker -A -f -n '__fish_seen_subcommand_from create' -s i -l interac
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l ipc -d 'Default is to create a private IPC namespace (POSIX SysV IPC) for the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l link -d 'Add link to another container in the form of <name|id>:alias'
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l lxc-conf -d '(lxc exec-driver only) Add custom lxc options --lxc-conf="lxc.cgroup.cpuset.cpus = 0,1"'
-complete -c docker -A -f -n '__fish_seen_subcommand_from create' -s m -l memory -d 'Memory limit (format: <number><optional unit>, where unit = b, k, m or g)'
+complete -c docker -A -f -n '__fish_seen_subcommand_from create' -s m -l memory -d 'Memory limit (format: <number>[<unit>], where unit = b, k, m or g)'
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l mac-address -d 'Container MAC address (e.g. 92:d0:c6:0a:29:33)'
-complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l memory-swap -d "Total memory usage (memory + swap), set '-1' to disable swap (format: <number><optional unit>, where unit = b, k, m or g)"
+complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l memory-swap -d "Total memory usage (memory + swap), set '-1' to disable swap (format: <number>[<unit>], where unit = b, k, m or g)"
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l name -d 'Assign a name to the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -l net -d 'Set the Network mode for the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from create' -s P -l publish-all -d 'Publish all exposed ports to random ports on the host interfaces'
@@ -321,9 +321,9 @@ complete -c docker -A -f -n '__fish_seen_subcommand_from run' -s i -l interactiv
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l ipc -d 'Default is to create a private IPC namespace (POSIX SysV IPC) for the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l link -d 'Add link to another container in the form of <name|id>:alias'
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l lxc-conf -d '(lxc exec-driver only) Add custom lxc options --lxc-conf="lxc.cgroup.cpuset.cpus = 0,1"'
-complete -c docker -A -f -n '__fish_seen_subcommand_from run' -s m -l memory -d 'Memory limit (format: <number><optional unit>, where unit = b, k, m or g)'
+complete -c docker -A -f -n '__fish_seen_subcommand_from run' -s m -l memory -d 'Memory limit (format: <number>[<unit>], where unit = b, k, m or g)'
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l mac-address -d 'Container MAC address (e.g. 92:d0:c6:0a:29:33)'
-complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l memory-swap -d "Total memory usage (memory + swap), set '-1' to disable swap (format: <number><optional unit>, where unit = b, k, m or g)"
+complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l memory-swap -d "Total memory usage (memory + swap), set '-1' to disable swap (format: <number>[<unit>], where unit = b, k, m or g)"
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l name -d 'Assign a name to the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -l net -d 'Set the Network mode for the container'
 complete -c docker -A -f -n '__fish_seen_subcommand_from run' -s P -l publish-all -d 'Publish all exposed ports to random ports on the host interfaces'

man/docker-create.1.md

@@ -179,7 +179,7 @@ millions of trillions.
    (lxc exec-driver only) Add custom lxc options --lxc-conf="lxc.cgroup.cpuset.cpus = 0,1"
 
 **-m**, **--memory**=""
-   Memory limit (format: <number><optional unit>, where unit = b, k, m or g)
+   Memory limit (format: <number>[<unit>], where unit = b, k, m or g)
 
    Allows you to constrain the memory available to a container. If the host
 supports swap memory, then the **-m** memory setting can be larger than physical
@@ -193,7 +193,7 @@ system's page size (the value would be very large, that's millions of trillions)
 **--memory-swap**=""
    Total memory limit (memory + swap)
 
-   Set `-1` to disable swap (format: <number><optional unit>, where unit = b, k, m or g).
+   Set `-1` to disable swap (format: <number>[<unit>], where unit = b, k, m or g).
 This value should always larger than **-m**, so you should always use this with **-m**.
 
 **--memory-swappiness**=""

man/docker-run.1.md

@@ -276,7 +276,7 @@ which interface and port to use.
   Logging driver specific options.
 
 **-m**, **--memory**=""
-   Memory limit (format: <number><optional unit>, where unit = b, k, m or g)
+   Memory limit (format: <number>[<unit>], where unit = b, k, m or g)
 
    Allows you to constrain the memory available to a container. If the host
 supports swap memory, then the **-m** memory setting can be larger than physical
@@ -287,7 +287,7 @@ system's page size (the value would be very large, that's millions of trillions)
 **--memory-swap**=""
    Total memory limit (memory + swap)
 
-   Set `-1` to disable swap (format: <number><optional unit>, where unit = b, k, m or g).
+   Set `-1` to disable swap (format: <number>[<unit>], where unit = b, k, m or g).
 This value should always larger than **-m**, so you should always use this with **-m**.
 
 **--mac-address**=""