docs/patch-policy.txt: fix missing word

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Trivial documentation fix for Signed-off-by

Make consistent the capitalization and punctuation of Signed-of-by examples.

Signed-off-by: Ralph Siemsen <ralphs@netwinder.org>
Acked-by: "Samuel Martin" <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
bellagio: needs dynamic library support

Fixes:
http://autobuild.buildroot.net/results/76e/76ebe0b9e963367427e23ba963f1bce6fd2725c4/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>