Move release note changes together

Author: Mick235711

clang/docs/ReleaseNotes.rst

@@ -148,19 +148,6 @@ C++ Specific Potentially Breaking Changes
     // Now diagnoses with an error.
     void f(int& i [[clang::lifetimebound]]);
 
-- Clang will now prefer the ``[[nodiscard]]`` declaration on function declarations over ``[[nodiscard]]``
-  declaration on the return type of a function. Previously, when both have a ``[[nodiscard]]`` declaration attached,
-  the one on the return type would be preferred. This may affect the generated warning message:
-
-  .. code-block:: c++
-
-    struct [[nodiscard("Reason 1")]] S {};
-    [[nodiscard("Reason 2")]] S getS();
-    void use()
-    {
-      getS(); // Now diagnoses "Reason 2", previously diagnoses "Reason 1"
-    }
-
 ABI Changes in This Version
 ---------------------------
 
@@ -551,6 +538,19 @@ Improvements to Clang's diagnostics
 - When diagnosing an unused return value of a type declared ``[[nodiscard]]``, the type
   itself is now included in the diagnostic.
 
+- Clang will now prefer the ``[[nodiscard]]`` declaration on function declarations over ``[[nodiscard]]``
+  declaration on the return type of a function. Previously, when both have a ``[[nodiscard]]`` declaration attached,
+  the one on the return type would be preferred. This may affect the generated warning message:
+
+  .. code-block:: c++
+
+    struct [[nodiscard("Reason 1")]] S {};
+    [[nodiscard("Reason 2")]] S getS();
+    void use()
+    {
+      getS(); // Now diagnoses "Reason 2", previously diagnoses "Reason 1"
+    }
+
 Improvements to Clang's time-trace
 ----------------------------------