screen-share: Add screen-share command to weston.ini man page

This adds a description of the screen-share command configuration key to the
weston.ini man page.

[Pekka Paalanen: removed the sentence about default value, because the
default value is empty, and AFAIU cannot work.]

Signed-off-by: Andrew Wedgbury <andrew.wedgbury@realvnc.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
1 file changed