Put note in ReleaseNotes according to alphabetical order.

Author: ksromanov

clang-tools-extra/docs/ReleaseNotes.rst

@@ -141,10 +141,6 @@ New check aliases
 Changes in existing checks
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-- Fixed :doc:`cppcoreguidelines-pro-type-union-access
-  <clang-tidy/checks/cppcoreguidelines/pro-type-union-access>` check to
-  report a location even when the member location is not valid.
-
 - Improved :doc:`bugprone-casting-through-void
   <clang-tidy/checks/bugprone/casting-through-void>` check to suggest replacing
   the offending code with ``reinterpret_cast``, to more clearly express intent.
@@ -184,6 +180,10 @@ Changes in existing checks
   avoid false positive when member initialization depends on a structured
   binding variable.
 
+- Fixed :doc:`cppcoreguidelines-pro-type-union-access
+  <clang-tidy/checks/cppcoreguidelines/pro-type-union-access>` check to
+  report a location even when the member location is not valid.
+
 - Improved :doc:`misc-definitions-in-headers
   <clang-tidy/checks/misc/definitions-in-headers>` check by rewording the
   diagnostic note that suggests adding ``inline``.