Fix typo in config-json man page
Fix typo in config-json man page

In the NAME section: "confg.json" -> "config.json"

Signed-off-by: Tom X. Tobin <b0bdf0c2909ecbc30f590f341f679542aabec2e5@tomxtobin.com>

aditirajagopal/docker,aditirajagopal/docker,aditirajagopal/docker