Address review: Improve NEWS text

Erlend E. Aasland · Erlend E. Aasland · commit dc7371388b9b · 2021-01-04T20:17:55.000+01:00
diff --git a/Misc/NEWS.d/next/Library/2021-01-04-15-05-40.bpo-1635741.EOCfZY.rst b/Misc/NEWS.d/next/Library/2021-01-04-15-05-40.bpo-1635741.EOCfZY.rst
@@ -1,2 +1,2 @@
-Convert :mod:`multibytecodec` to multi-phase init and module state. Patch by
-Erlend E. Aasland.
+Convert :mod:`multibytecodec` to multi-phase initialization (:pep:`489`).
+Patch by Erlend E. Aasland.
