Modify release notes and the status page per review comments.

Author: frederick-vs-ja

libcxx/docs/ReleaseNotes/21.rst

@@ -39,6 +39,7 @@ Implemented Papers
 ------------------
 
 - N4258: Cleaning-up noexcept in the Library (`Github <https://github.com/llvm/llvm-project/issues/99937>`__)
+- P0767R1: Deprecate POD (`Github <https://github.com/llvm/llvm-project/issues/104013>`__)
 - P1361R2: Integration of chrono with text formatting (`Github <https://github.com/llvm/llvm-project/issues/100014>`__)
 
 Improvements and New Features
@@ -55,7 +56,7 @@ Improvements and New Features
 Deprecations and Removals
 -------------------------
 
-- ``std::is_pod`` and ``std::is_pod_v`` are deprecated since C++20 according to the standard.
+- ``std::is_pod`` and ``std::is_pod_v`` are deprecated in C++20 and later.
 
 Upcoming Deprecations and Removals
 ----------------------------------

libcxx/docs/Status/Cxx20Papers.csv

@@ -13,7 +13,7 @@
 "`P0616R0 <https://wg21.link/P0616R0>`__","de-pessimize legacy <numeric> algorithms with std::move","2017-11 (Albuquerque)","|Complete|","12",""
 "`P0653R2 <https://wg21.link/P0653R2>`__","Utility to convert a pointer to a raw pointer","2017-11 (Albuquerque)","|Complete|","6",""
 "`P0718R2 <https://wg21.link/P0718R2>`__","Atomic shared_ptr","2017-11 (Albuquerque)","","",""
-"`P0767R1 <https://wg21.link/P0767R1>`__","Deprecate POD","2017-11 (Albuquerque)","|Complete|","7",""
+"`P0767R1 <https://wg21.link/P0767R1>`__","Deprecate POD","2017-11 (Albuquerque)","|Complete|","21","It was previously erroneously marked as complete in LLVM 7."
 "`P0768R1 <https://wg21.link/P0768R1>`__","Library Support for the Spaceship (Comparison) Operator","2017-11 (Albuquerque)","|Complete|","",""
 "`P0777R1 <https://wg21.link/P0777R1>`__","Treating Unnecessary ``decay``\ ","2017-11 (Albuquerque)","|Complete|","7",""
 "","","","","",""