Display a TOC in "Runtime Configuration"

The Runtime Configuration reference guide didn't have any table of
contents since the layout was "default" while it should be
"documentation".

Also remove the wrapping inside chevrons and back-ticks to make the
table match all the sections and to have anchors.
Add an anchor to the DSN section

Follow up of dba91690 but with the anchor since 6de0e949 fix the TOC in
the mentioned guide.