Update description for docker plugin inspect

Signed-off-by: yuexiao-wang <wang.yuexiao@zte.com.cn>

docs/reference/commandline/plugin_inspect.md

@@ -12,9 +12,9 @@ parent = "smn_cli"
 # plugin inspect (experimental)
 
 ```markdown
-Usage:  docker plugin inspect PLUGIN
+Usage:  docker plugin inspect [OPTIONS] PLUGIN [PLUGIN...]
 
-Inspect a plugin
+Display detailed information on one or more plugins
 
 Options:
       -f, --format string   Format the output using the given go template