Fix issues, add missing

[jfgobin]

Current output

usage: ./voila.sh -s <source> -d <destination> -p <profile> -r <command> -c <case> [-e|-n]

    <source>     : image source to be analyzed.
    <destination>: output directory.
    <profile>    : Volatility image profile identification.
    <command>    : [scan|dump] voltaire arguments.
    <case>       : evidence number (ESXX).
    -h           : Show usage.
    -e           : if used, will encrypt database file.
    -n           : if used, will specify number of processes to scan simultaneously, by defaut 4.
    -x           : if used, will specify the commands in comma seperated string, to exclude from running Volatility scan.

Spelling mistakes, missing "-r command",