message: docs: add how to pass array options to the CLI
  With this change we add an example on how to use array options in the CLI.
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diff: @@ -113,6 +113,10 @@ Command syntax is shown as follows:
  Boolean options have two forms: `--this-option` sets the flag to `true`, `--no-this-option` sets it to `false`.
  If neither option is supplied, the flag remains in its default state, as listed in the reference documentation.
  +### Array options
  +
  +Array options can be provided in two forms: `--option value1 value2` or `--option value1 --option value2`.
  +
  ### Relative paths
  Options that specify files can be given as absolute paths, or as paths relative to the current working directory, which is generally either the workspace or project root.
  