Bug#928215: Mention where are the rates listed

[積丹尼 Dan Jacobson <jidanni@jidanni.org>]

Package: x11-xserver-utils
Version: 7.7+8
Severity: wishlist
File: /usr/share/man/man1/xrandr.1.gz

       -q, --query
              When this option is present, or when no configuration changes are requested, xrandr will display the current state of the system.

OK, but also do mention what that consists of, else e.g., the user who
wants to use --rate won't know that in:

   1920x1080     60.00 +  59.96    59.93
   1680x1050     69.88    59.95    59.88
   1600x1024     60.17
   1400x1050     74.76    70.00    59.98
   1600x900      59.95    59.82*
   1280x1024     75.02    60.02

75.02 etc. are the rates.

Also change:
>       If invoked without any option, it will dump the state of the outputs, showing the existing modes for each of them...
<       If invoked without any option or with --query, it will dump the state of the outputs, showing the existing modes for each of them...