coding-style.rst: trivial: fix location of driver model macros

The dev_printk()-like functions moved to include/linux/dev_print.h in
commit af628aae86 ("device.h: move dev_printk()-like functions to
dev_printk.h").

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20210423184012.39300-1-twoerner@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/process/coding-style.rst

@@ -890,7 +890,7 @@ Kernel messages do not have to be terminated with a period.
 
 Printing numbers in parentheses (%d) adds no value and should be avoided.
 
-There are a number of driver model diagnostic macros in <linux/device.h>
+There are a number of driver model diagnostic macros in <linux/dev_printk.h>
 which you should use to make sure messages are matched to the right device
 and driver, and are tagged with the right level:  dev_err(), dev_warn(),
 dev_info(), and so forth.  For messages that aren't associated with a