argument: Fix alignment of help text

When printed on the terminal the description of the command line options
is supposed to be aligned for all options. The --action_target argument
is currently not aligned with any of the other arguments. Fix this.

Change-Id: I170d445a5e490c5d6e99379b8b704992a51fca3c
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed