doc: kernel_event_logger: Update constant names to the current.
doc: kernel_event_logger: Update constant names to the current.

Change-Id: I31bae75b341c6cddc51681c6ef6e1aaf186970ff
Signed-off-by: Paul Sokolovsky <35cb557f011771c94f127d6fef99f804b62203f5@linaro.org>

tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc,tidyjiang8/zephyr-doc