Fixed the help command to display 'startup' (correct) vs. 'start' (incorrect)

Author: mikeschinkel

commands/help

@@ -7,7 +7,7 @@ ${YELLOW}WPLib Box ${GREEN}CLI${RESET} usage:
 box ${GREEN}database${RESET} [<args>]   - Manage databases.
 box ${GREEN}container${RESET} [<args>]  - Manage Docker containers.
 
-box ${GREEN}start${RESET}               - Start Docker containers found in project.json's services object.
+box ${GREEN}startup${RESET}             - Start Docker containers found in project.json's services object.
 box ${GREEN}restart${RESET}             - Restart Docker containers found in project.json's services object.
 box ${GREEN}shutdown${RESET}            - Shutdown all Docker containers.