Update docs: misc edits for consistency (#3911)

* Add a warning sign to "Warning" labels

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

* Update docs/configuring-playbook-matrix-registration.md

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

* Update docs/maintenance-and-troubleshooting.md: remove a section for ma1sd

As the project has not updated since several years, it does not seem to be reasonable to pick it up specially on the document.

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

* Common header for sections about adjusting the playbook configuration

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

* Update docs/configuring-playbook-dendrite.md: fix links to dendrite.yaml.j2

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

* Update docs/configuring-playbook-bridge-mautrix-signal.md: remove a note added by a commit to remove signalgo

The note has been added with 2f6525ccb3, apparently copied from docs/configuring-playbook-bridge-mautrix-signalgo.md

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

* Update docs/configuring-playbook-bridge-mautrix-wsproxy.md: fix the anchor link text to mautrix-imessage documentation

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

* Update docs/configuring-playbook-etherpad.md: add a note about the component being managed externally

Refer docs/configuring-playbook-backup-borg.md

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

* Update docs/configuring-playbook-jitsi.md: use the common label for warning messages

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

* Update docs/configuring-playbook-ldap-auth.md: unrecommend using ma1sd for authentication

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

* Update docs/configuring-playbook-appservice-double-puppet.md: remove a duplicate anchor link

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

* Update docs for old mautrix bridges for Facebook and Instagram: remove anchor links to the deleted files

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

* Update docs/configuring-playbook-bridge-wechat.md: use common descriptions

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

* Update docs/configuring-playbook-bridge-matrix-bridge-sms.md: create a section for the prerequisite

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

* Update docs/maintenance-and-troubleshooting.md: use the common header text

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

* Use common descriptions for adding the configuration

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

* Update docs/configuring-playbook-bridge-mautrix-telegram.md: small edits

- Add a section for a Telegram API key
- Add a section for instruction about Appservice Double Puppet or Shared Secret Auth

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

* Update docs for Draupnir and Mjolnir: replace colons with periods

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

* Update docs/configuring-playbook-rageshake.md: adopt the common instruction

Based on docs/configuring-playbook-sygnal.md regarding the notification about necessity of the service.

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

* Add a note about the components managed externally

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

---------

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

docs/configuring-playbook-mautrix-bridges.md

@@ -30,7 +30,7 @@ matrix_mautrix_SERVICENAME_configuration_extension_yaml: |
       '@alice:{{ matrix_domain }}': admin
 ```
 
-## encryption
+### Encryption
 
 Encryption support is off by default. If you would like to enable encryption, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
 
@@ -48,7 +48,7 @@ matrix_mautrix_SERVICENAME_bridge_encryption_enabled: true
 matrix_mautrix_SERVICENAME_bridge_encryption_default: true
 ```
 
-## relay mode
+### Relay mode
 
 Relay mode is off by default. If you would like to enable relay mode, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
 
@@ -79,7 +79,7 @@ matrix_mautrix_SERVICENAME_configuration_extension_yaml: |
       default: true
 ```
 
-## Setting the bot's username
+### Setting the bot's username
 
 ```yaml
 matrix_mautrix_SERVICENAME_appservice_bot_username: "BOTNAME"
@@ -87,7 +87,7 @@ matrix_mautrix_SERVICENAME_appservice_bot_username: "BOTNAME"
 
 Can be used to set the username for the bridge.
 
-## Discovering additional configuration options
+### Extending the configuration
 
 You may wish to look at `roles/custom/matrix-bridge-mautrix-SERVICENAME/templates/config.yaml.j2` and `roles/custom/matrix-bridge-mautrix-SERVICENAME/defaults/main.yml` to find other things you would like to configure.