[clang][Docs] Add release note for diagnosing missing parentheses in function-like macros

Author: StarOne01

clang/docs/ReleaseNotes.rst

@@ -128,6 +128,7 @@ Improvements to Clang's diagnostics
   which are supposed to only exist once per program, but may get duplicated when
   built into a shared library.
 - Fixed a bug where Clang's Analysis did not correctly model the destructor behavior of ``union`` members (#GH119415).
+- Clang now provides a diagnostic note for ``function-like macros`` that are missing the required parentheses.
 
 Improvements to Clang's time-trace
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