groff: add comment for explaining use of patch
@@ -9,6 +9,8 @@ source:
url: https://ftp.gnu.org/gnu/groff/groff-{{ version }}.tar.gz
sha256: e78e7b4cb7dec310849004fa88847c44701e8d133b5d4c13057d876c1bad0293
patches:
+ # xref: https://trac.macports.org/ticket/59783
+ # xref: https://github.com/openembedded/openembedded-core/commit/e9beba2a
- 0001-Include-config.h.patch
build:
