Merge pull request #13759 from rgacogne/ddist-doc-tls-certificates

dnsdist: Improve the documentation around TLS certificates and keys

diff --cc pdns/dnsdist-console.cc
Simple merge

diff --cc pdns/dnsdist-lua.cc
Simple merge

diff --cc pdns/dnsdistdist/docs/reference/config.rst
Simple merge

diff --cc pdns/dnsdistdist/doh3.cc
Simple merge

diff --cc pdns/dnsdistdist/doq-common.hh
Simple merge

diff --cc pdns/dnsdistdist/doq.cc
Simple merge

diff --cc regression-tests.dnsdist/dnsdisttests.py
Simple merge