Address code review comments

Author: AmrDeveloper

clang/docs/ReleaseNotes.rst

@@ -214,7 +214,7 @@ Improvements to Clang's diagnostics
   :doc:`ThreadSafetyAnalysis` still does not perform alias analysis. The
   feature will be default-enabled with ``-Wthread-safety`` in a future release.
 
-- Improve the diagnostics for shadows template parameter.
+- Improve the diagnostics for shadows template parameter to report correct location (#GH129060).
 
 Improvements to Clang's time-trace
 ----------------------------------

clang/test/CXX/temp/temp.res/temp.local/p6.cpp

@@ -164,7 +164,8 @@ A<0>::B a;
 }
 
 template <typename T> void shadow() {  // expected-note{{template parameter is declared here}}
-  using arr = int[1]; // expected-warning@+1 {{decomposition declarations are a C++17 extension}}
+  using arr = int[1];
+  // expected-warning@+1 {{decomposition declarations are a C++17 extension}}
   auto [
     T // expected-error {{declaration of 'T' shadows template parameter}}
     ] = arr{};