Issue #27147: Mention PEP 420 in the importlib docs.

diff --cc Doc/library/importlib.rst
Simple merge

diff --cc Misc/NEWS
index ef6ca9244d2aaf0bac9388d8e124903c3de732c2,cd6323994cbcc545f5e48ca0286b7eb09be5a310..ce051d51a25559c8eaeb3e2fc279e93f7b1b68e7
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -103,8 -34,6 +103,10 @@@ Core and Builtin
  - Issue #26718: super.__init__ no longer leaks memory if called multiple times.
    NOTE: A direct call of super.__init__ is not endorsed!
  
 +- Issue #27138: Fix the doc comment for FileFinder.find_spec().
 +
++- Issue #27147: Mention PEP 420 in the importlib docs.
++
  - Issue #25339: PYTHONIOENCODING now has priority over locale in setting the
    error handler for stdin and stdout.