doc/../changelog: record on new nrf54l OTP doc page

Added info on ug_nrf54l_otp_map page.

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>

Author: nvlsianpu

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -68,7 +68,7 @@ Developing with nRF70 Series
 Developing with nRF54L Series
 =============================
 
-|no_changes_yet_note|
+* Added the :ref:`ug_nrf54l_otp_map` page, showing the OTP memory allocation for the nRF54L Series devices.
 
 Developing with nRF54H Series
 =============================