Documentation/applying-patches.txt: fix a bad external link

We can't use :ref: for external links.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-09-21 10:04:16 -03:00
commit 3a61baddce