[why]
I guess it would be good to explicitly state that PRs should be
discussed beforehand, as the disappointment can be big if it is not even
considered for pulling. Prior discussion can also clarify some technical
things that otherwise would need laborious changes afterwards.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
[why]
If we ever switch the default branch the links would break. So just say
'default branch' directly, whichever that may be.
[note]
CI workflows not changed, I do not know if there is an alias for the
default branch available.
Fixes: #971 (partially)
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>