Improve .gitlab/issue_templates/Offboarding.md

- Link to referenced files in the git repo.
- Use new issue URLs that preselect the issue template.
- Add dev and TU private IRC channels.

.gitlab/issue_templates/Offboarding.md

@@ -13,8 +13,8 @@ This template should be used for offboarding Arch Linux team members.
 
 ## All roles checklist
 
-- [ ] Remove user email by reverting instructions from `docs/email.md`.
-  - [ ] Remove entry in `group_vars/all/archusers.yml`.
+- [ ] Remove user email by reverting instructions from [`docs/email.md`](docs/email.md).
+  - [ ] Remove entry in [`group_vars/all/archusers.yml`](group_vars/all/archusers.yml).
   - [ ] Remove SSH pubkey from `pubkeys/<username>.pub`.
   - [ ] Run `ansible-playbook -t archusers  $(git grep -l archusers playbooks/ | grep -v phrik)`.
   - [ ] Setup forwarding if requested (please add the current date as a comment above the mail address in Postfix's `users` file).
@@ -23,24 +23,25 @@ This template should be used for offboarding Arch Linux team members.
       - We will inform the user prior to disabling the forwarding.
       - The forwarding can be extended if there are good reasons for doing so.
 - [ ] Set user to inactive in archweb: https://www.archlinux.org/admin/auth/user/
-- [ ] Remove member from [staff mailing list](https://lists.archlinux.org/mailman3/lists/staff.lists.archlinux.org/members/member/)
-- [ ] Moderate email address on [arch-dev-public](https://lists.archlinux.org/mailman3/lists/arch-dev-public.lists.archlinux.org/members/member/) (find member and moderate)
-- [ ] Ask the user to leave `#archlinux-staff` on Libera Chat and forget the password
-- [ ] Remove staff cloak on Libera Chat ([Group contacts](https://wiki.archlinux.org/title/Arch_IRC_channels#Libera_Chat_group_contacts))
+- [ ] Remove member from [staff mailing list](https://lists.archlinux.org/mailman3/lists/staff.lists.archlinux.org/members/member/).
+- [ ] Moderate email address on [arch-dev-public](https://lists.archlinux.org/mailman3/lists/arch-dev-public.lists.archlinux.org/members/member/) (find member and moderate).
+- [ ] Ask the user to leave `#archlinux-staff` on Libera Chat and forget the password.
+- [ ] Remove staff cloak on Libera Chat ([Group contacts](https://wiki.archlinux.org/title/Arch_IRC_channels#Libera_Chat_group_contacts)).
 - [ ] Remove the user from relevant staff groups on Keycloak.
 
 ## TU/Developer offboarding checklist
 
-- [ ] Remove member from [arch-tu](https://lists.archlinux.org/mailman3/lists/arch-tu.lists.archlinux.org/members/member/) and/or [arch-dev](https://lists.archlinux.org/mailman3/lists/arch-dev.lists.archlinux.org/members/member/) mailing lists
-- [ ] Create [issue in archlinux-keyring](https://gitlab.archlinux.org/archlinux/archlinux-keyring/-/issues/new) (choose *"Remove Packager Key"* and/or *"Remove Main Key"* template)
+- [ ] Remove member from [arch-tu](https://lists.archlinux.org/mailman3/lists/arch-tu.lists.archlinux.org/members/member/) and/or [arch-dev](https://lists.archlinux.org/mailman3/lists/arch-dev.lists.archlinux.org/members/member/) mailing lists.
+- [ ] Ask the user to leave `#archlinux-tu` and/or `#archlinux-dev` on Libera Chat and forget the password(s).
+- [ ] Create an issue in [archlinux-keyring](https://gitlab.archlinux.org/archlinux/archlinux-keyring) using the [*"Remove Packager Key"*](https://gitlab.archlinux.org/archlinux/archlinux-keyring/-/issues/new?issuable_template=Remove%20Packager%20Key) and/or [*"Remove Main Key"*](https://gitlab.archlinux.org/archlinux/archlinux-keyring/-/issues/new?issuable_template=Remove%20Main%20Key) template.
 
 ## DevOps offboarding checklist
 
-- [ ] Remove entries in `group_vars/all/root_access.yml`.
+- [ ] Remove entries in [`group_vars/all/root_access.yml`](group_vars/all/root_access.yml).
 - [ ] Run `ansible-playbook -t root_ssh playbooks/all-hosts-basic.yml`.
 - [ ] Run `ansible-playbook playbooks/hetzner_storagebox.yml playbooks/rsync.net.yml`.
-- [ ] Remove member from [arch-devops-private mailing lists](https://lists.archlinux.org/mailman3/lists/arch-devops-private.lists.archlinux.org/members/member/)
-- [ ] Remove pubkey from [Hetzner's key management](https://robot.your-server.de/key/index)
+- [ ] Remove member from [arch-devops-private mailing lists](https://lists.archlinux.org/mailman3/lists/arch-devops-private.lists.archlinux.org/members/member/).
+- [ ] Remove pubkey from [Hetzner's key management](https://robot.your-server.de/key/index).
 
 ## Wiki Administrator checklist