keep alpha order of note

Author: fubowen

clang-tools-extra/docs/ReleaseNotes.rst

@@ -176,11 +176,6 @@ Changes in existing checks
   <clang-tidy/checks/concurrency/mt-unsafe>` check by fixing a false positive
   where ``strerror`` was flagged as MT-unsafe.
 
-- Improved :doc:`readability-math-missing-parentheses
-  <clang-tidy/checks/readability/math-missing-parentheses>` check by fixing
-  false negatives where math expressions are the operand of assignment operators
-  or comparison operators.
-
 - Improved :doc:`misc-const-correctness
   <clang-tidy/checks/misc/const-correctness>` check by adding the option
   `AllowedTypes`, that excludes specified types from const-correctness
@@ -239,6 +234,11 @@ Changes in existing checks
   tolerating fix-it breaking compilation when functions is used as pointers
   to avoid matching usage of functions within the current compilation unit.
 
+- Improved :doc:`readability-math-missing-parentheses
+  <clang-tidy/checks/readability/math-missing-parentheses>` check by fixing
+  false negatives where math expressions are the operand of assignment operators
+  or comparison operators.
+
 Removed checks
 ^^^^^^^^^^^^^^