Took care of some quoting for the "x11" feature and also a
messed up sentence in the second paragraph.
(From yocto-docs rev: ed71135edbdd8de02cbb6d7cc972aab0e269e4cb)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>