Modify coccinelle documentation to further clarify
the usage of the makefile C variable by coccicheck.
Signed-off-by: NSumera Priyadarsini <sylphrenadin@gmail.com>
Acked-by: NJulia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/20200811002350.5553-1-sylphrenadin@gmail.comSigned-off-by: NJonathan Corbet <corbet@lwn.net>