main/sed: reference upstream bug report in patch file

main/sed/APKBUILD

@@ -40,5 +40,5 @@ package() {
 
 sha512sums="
 7de25d9bc2981c63321c2223f3fbcab61d7b0df4fcf7d4394b72400b91993e1288d8bf53948ed5fffcf5a98c75265726a68ad4fb98e1d571bf768603a108c1c8  sed-4.8.tar.xz
-b0a542f1534f6b613f34eec08e52cc4471d301aa8daf335bfc25b298bafee00b1a2a8948d6428aeb1e1a4b13abdc81d50e049c3e1316c0bd81c8468f316fdb60  fix-test-canonicalize-lgpl.patch
+bd3bfa1cf4cd78751a2255e1398e26cf325c13dec1478d65858a29024f18f45e64f16d57a23d2bdae82732d9224b7941be923e9470b6ec8a2542ab68f68c8e1a  fix-test-canonicalize-lgpl.patch
 "

main/sed/fix-test-canonicalize-lgpl.patch

@@ -3,6 +3,8 @@ Furthermore, the handling of a leading '//' is implementation-defined
 hence this is not a bug in musl but instead something the sed test suite
 should not rely on.
 
+See https://lists.gnu.org/archive/html/bug-sed/2022-07/msg00003.html
+
 diff -upr sed-4.8.orig/gnulib-tests/test-canonicalize-lgpl.c sed-4.8/gnulib-tests/test-canonicalize-lgpl.c
 --- sed-4.8.orig/gnulib-tests/test-canonicalize-lgpl.c	2022-07-31 15:28:20.249302470 +0200
 +++ sed-4.8/gnulib-tests/test-canonicalize-lgpl.c	2022-07-31 15:30:03.099518653 +0200