Update clang/docs/ReleaseNotes.rst

Fix typo

Co-authored-by: Sirraide <[email protected]>

Author: dougsonos

clang/docs/ReleaseNotes.rst

@@ -710,7 +710,7 @@ Improvements to Clang's diagnostics
   pointer, provided it can be proven that the pointer only points to
   ``[[noreturn]]`` functions.
 
-- Added a separate diagnostic group `-Wfunction-effect-redeclarations``, for the more pedantic
+- Added a separate diagnostic group ``-Wfunction-effect-redeclarations``, for the more pedantic
   diagnostics for function effects (``[[clang::nonblocking]]`` and ``[[clang::nonallocating]]``).
   Moved the warning for a missing (though implied) attribute on a redeclaration into this group.
   Added a new warning in this group for the case where the attribute is missing/implicit on