Help messages cleanup
Standardize command usage messages:
argument
: keyword
<argument>
: input parameter
"<arguments>"
: input string that can contain multiple words
When an argument is enclosed by []
it means it's optional
Fix these help messages (wrong descriptions):
cmd voice, cmd help records
Improve help messages of these commands:
bot_cmd help, menu_cmd, menu_cmd directmenu, cl_cmd hud
Improve usage and error messages of these vote commands:
cmd vote, cmd vote help, cmd vote call, cmd vote call 'wrong_cmd'