keep the release notes in alphabetical order.

Author: movie-travel-code

clang-tools-extra/docs/ReleaseNotes.rst

@@ -170,6 +170,11 @@ Changes in existing checks
   when the format string is converted to a different type by an implicit
   constructor call.
 
+- Improved :doc:`performance-unnecessary-copy-initialization
+  <clang-tidy/checks/performance/unnecessary-copy-initialization>` check by 
+  adding detection for the local variables initialized with the member variable
+  of a const object.
+
 - Improved :doc:`portability-template-virtual-member-function
   <clang-tidy/checks/portability/template-virtual-member-function>` check to
   avoid false positives on pure virtual member functions.
@@ -182,11 +187,6 @@ Changes in existing checks
   <clang-tidy/checks/readability/qualified-auto>` check by adding the option
   `IgnoreAliasing`, that allows not looking at underlying types of type aliases.
 
-- Improved :doc:`performance-unnecessary-copy-initialization
-  <clang-tidy/checks/performance/unnecessary-copy-initialization>` check by 
-  adding detection for the local variables initialized with the member variable
-  of a const object.
-
 Removed checks
 ^^^^^^^^^^^^^^