doc/input : Fix typos in Documentation/input

This patch fix spelling typos in Documentations/input.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --cc Documentation/input/alps.txt
Simple merge

diff --cc Documentation/input/event-codes.txt
Simple merge

diff --cc Documentation/input/gpio-tilt.txt
Simple merge

diff --cc Documentation/input/iforce-protocol.txt
Simple merge

diff --cc Documentation/input/walkera0701.txt
Simple merge

diff --cc Documentation/input/yealink.txt
Simple merge