Minor doc updates, added Windows debugging info

Change-Id: I7ddd6f8dead5db725c4e5f35778ce4b6f792bda9
Reviewed-on: https://code.wireshark.org/review/6096
Petri-Dish: Graham Bloice <graham.bloice@trihedral.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Graham Bloice <graham.bloice@trihedral.com>