Update nrf_fuel_gauge/CHANGELOG.rst

Co-authored-by: Pekka Niskanen <73991005+peknis@users.noreply.github.com>

nrf_fuel_gauge/CHANGELOG.rst

@@ -29,6 +29,8 @@ Added
   Such changes includes charger state, vbus connection status, and current measurement correction.
 * A functionality to retrieve and restore the library state, using the :c:func:`nrf_fuel_gauge_state_get` function and state member of the :c:struct:`nrf_fuel_gauge_init_parameters` structure.
 * A new member in the :c:struct:`nrf_fuel_gauge_state_info` structure to determine the current measurement value used after corrections.
+* A new member in the :c:struct:`nrf_fuel_gauge_state_info` structure to determine the state-of-charge value before it is rounded off.
+  The rounding off only applies to primary cell batteries.
 * A new member in the :c:struct:`nrf_fuel_gauge_state_info` structure to determine the state-of-charge value before it is rounded off.
   The rounding off only applies to primary cell batteries.
 * New undocumented members in the :c:struct:`nrf_fuel_gauge_config_parameters` structure, intended for future adjustability.