docs: clearing-warn-once.txt: add a title for this document

This document misses a title. Add it, in order to follow
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Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2019-04-10 06:56:22 -03:00 committed by Jonathan Corbet
parent 4961836468
commit 26187d18b8
1 changed files with 2 additions and 0 deletions

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Clearing WARN_ONCE
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WARN_ONCE / WARN_ON_ONCE only print a warning once.