doc: Update versions for 2.2.0 release

Update chgangelog versions for 2.2.0 release

Signed-off-by: UMA PRASEEDA <uma.praseeda@nordicsemi.no>

Author: umapraseeda

gzll/CHANGELOG.rst

@@ -7,12 +7,12 @@ Changelog
    :local:
    :depth: 2
 
-All notable changes to this project are documented in this file.
+All the notable changes to this project are documented on this page.
 
-Main branch
-***********
+nRF Connect SDK v2.2.0
+**********************
 
-Support nRF5340 network core.
+All the notable changes included in the |NCS| v2.2.0 release are documented in this section.
 
 Added
 =====

lc3/CHANGELOG.rst

@@ -3,10 +3,12 @@
 Changelog
 #########
 
-All notable changes to this project are documented in this section.
+All notable changes to this project are documented on this page.
 
-Main branch
-***********
+nRF Connect SDK v2.2.0
+**********************
+
+Here are all the notable changes included in the |NCS| v2.2.0 release:
 
 * Added new documentation pages.
 * Replaced API documentation link with the :ref:`lc3_api` page that includes content generated from sources.

mpsl/CHANGELOG.rst

@@ -7,14 +7,15 @@ Changelog
    :local:
    :depth: 2
 
-Main branch
-***********
+nRF Connect SDK v2.2.0
+**********************
 
-All the notable changes included in the main branch are documented in this section.
+All the notable changes included in the |NCS| v2.2.0 release are documented in this section.
 
 Bug fixes
 =========
-* Fixed an issue where the scheduler could put events in the past. (DRGN-17851, DRGN-18105)
+
+* Fixed an issue where the scheduler could put events in the past (DRGN-17851, DRGN-18105).
 
 nRF Connect SDK v2.1.0
 **********************

nrf_dm/doc/CHANGELOG.rst

@@ -7,20 +7,20 @@ Changelog
    :local:
    :depth: 2
 
-All the notable changes to this project are documented in this file.
+All the notable changes to this project are documented on this page.
 
-main
-****
+nRF Connect SDK v2.2.0
+**********************
 
-All the notable changes added to the |NCS| main are documented in this section.
+All the notable changes added to the |NCS| v2.2.0 release are documented in this section.
 
 Changes
 =======
 
 * Increased the synchronization procedure's resilience to interference.
 * Improved the quality of access addresses used internally in the library.
 * Renamed ``access_address`` to ``rng_seed`` in :c:type:`nrf_dm_config_t`.
-* :c:func:`nrf_dm_high_precision_calc` now handles out-of-memory errors by returning `NaN`.
+* :c:func:`nrf_dm_high_precision_calc` now handles out-of-memory errors by returning ``NaN``.
 
 nRF Connect SDK v2.1.0
 **********************

nrf_rpc/CHANGELOG.rst

@@ -7,12 +7,12 @@ Changelog
    :local:
    :depth: 2
 
-All notable changes to this project in the |NCS| are documented in this file.
+All the notable changes to this project are documented on this page.
 
-Main branch
-***********
+nRF Connect SDK v2.2.0
+**********************
 
-All the notable changes added to the |NCS| main are documented in this section.
+All the notable changes added to the |NCS| v2.2.0 release are documented in this section.
 
 Added
 =====

softdevice_controller/CHANGELOG.rst

@@ -7,12 +7,12 @@ Changelog
    :local:
    :depth: 2
 
-All the notable changes to this project are documented in this file.
+All the notable changes to this project are documented on this page.
 
-Main branch
-***********
+nRF Connect SDK v2.2.0
+**********************
 
-All the notable changes included in the main branch are documented in this section.
+All the notable changes included in the |NCS| v2.2.0 release are documented in this section.
 
 Added
 =====