Updates on cli reference documentation

- Update ps with `--last` flag
- Update commands with current output
- Make sure hugo does not detect the wrong language
- Update usage for `tag` command to be more coherent with the other ones

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: f4cfc6b9830ed236eb588d6a4dddca7455145e70
Component: engine

components/engine/docs/reference/commandline/plugin_ls.md

@@ -11,14 +11,17 @@ parent = "smn_cli"
 
 # plugin ls (experimental)
 
-    Usage: docker plugin ls
+```markdown
+Usage:  docker plugin ls
 
-    List plugins
+List plugins
 
+Aliases:
+  ls, list
+
+Options:
       --help   Print usage
-
-    Aliases:
-      ls, list
+```
 
 Lists all the plugins that are currently installed. You can install plugins
 using the [`docker plugin install`](plugin_install.md) command.