Update release notes

Author: leahkiner

docs/source/Support/bskReleaseNotes.rst

@@ -42,6 +42,9 @@ Version |release|
  outside of the release cycle.
 - updated plotting of ``opNav`` example scenarios to work again with latest version of ``matplotlib``
 - fixed a slew of compiler warnings when compiling with Xcode 15
+- Refactored the :ref:`PrescribedTransMsgPayload` message by renaming the message to
+ :ref:`LinearTranslationRigidBodyMsgPayload` and renaming the message variables from ``scalarPos`` and ``scalarVel`` to
+ ``rho`` and ``rhoDot``
 
 Version 2.2.1 (Dec. 22, 2023)
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