Add links to installing.md

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-backup-borg.md

@@ -16,4 +16,4 @@ BorgBackup is a deduplicating backup program with optional compression and encry
 
 For details about configuring and installing it, you can check them via:
 - [the role's documentation on the MASH (mother-of-all-self-hosting) project](https://github.com/mother-of-all-self-hosting/ansible-role-backup_borg/blob/main/docs/configuring-backup-borg.md)
-- `roles/galaxy/backup_borg/docs/configuring-backup-borg.md` locally, if you have fetched the Ansible roles
+- `roles/galaxy/backup_borg/docs/configuring-backup-borg.md` locally, if you have [fetched the Ansible roles](installing.md#update-ansible-roles)

docs/configuring-playbook-etherpad.md

@@ -20,7 +20,7 @@ When enabled together with the Jitsi video-conferencing platform (see [our docs
 
 The Ansible role for Etherpad is developed and maintained by the [MASH (mother-of-all-self-hosting) project](https://github.com/mother-of-all-self-hosting/ansible-role-etherpad). For details about configuring Etherpad, you can check them via:
 - [the role's documentation at the MASH project](https://github.com/mother-of-all-self-hosting/ansible-role-etherpad/blob/main/docs/configuring-etherpad.md)
-- `roles/galaxy/etherpad/docs/configuring-etherpad.md` locally, if you have fetched the Ansible roles
+- `roles/galaxy/etherpad/docs/configuring-etherpad.md` locally, if you have [fetched the Ansible roles](installing.md#update-ansible-roles)
 
 ## Adjusting DNS records
 

docs/configuring-playbook-jitsi.md

@@ -22,7 +22,7 @@ Jitsi is an open source video-conferencing platform. It can not only be integrat
 
 The Ansible role for Jitsi is developed and maintained by [MASH (mother-of-all-self-hosting) project](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi). For details about configuring Jitsi, you can check them via:
 - [the role's documentation at the MASH project](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md)
-- `roles/galaxy/jitsi/docs/configuring-jitsi.md` locally, if you have fetched the Ansible roles
+- `roles/galaxy/jitsi/docs/configuring-jitsi.md` locally, if you have [fetched the Ansible roles](installing.md#update-ansible-roles)
 
 ## Prerequisites
 

docs/configuring-playbook-postgres-backup.md

@@ -12,6 +12,6 @@ The playbook can install and configure [docker-postgres-backup-local](https://gi
 
 For details about configuring and installing it, you can check them via:
 - [the role's documentation on the MASH (mother-of-all-self-hosting) project](https://github.com/mother-of-all-self-hosting/ansible-role-postgres-backup/blob/main/docs/configuring-postgres-backup.md)
-- `roles/galaxy/postgres_backup/docs/configuring-postgres-backup.md` locally, if you have fetched the Ansible roles
+- `roles/galaxy/postgres_backup/docs/configuring-postgres-backup.md` locally, if you have [fetched the Ansible roles](installing.md#update-ansible-roles)
 
 **Note**: for a more complete backup solution (one that includes not only Postgres, but also other configuration/data files), you may wish to look into [BorgBackup](configuring-playbook-backup-borg.md) instead.