add missing link to pr

Co-authored-by: Bob Dröge <b.e.droge@rug.nl>

Author: laraPPr

easystacks/software.eessi.io/2023.06/eessi-2023.06-eb-5.0.0-2023a.yml

@@ -12,4 +12,5 @@ easyconfigs:
       options:
         # see https://github.com/easybuilders/easybuild-easyconfigs/pull/22707
         # and https://github.com/easybuilders/easybuild-easyconfigs/pull/22540
+        # and https://github.com/easybuilders/easybuild-easyconfigs/pull/22781
         from-commit: 720c5b5b8280bf342d827617ee14738f3d231097