Update docs for components related to authentication: adopt the common descriptions

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

docs/configuring-playbook-ldap-auth.md

@@ -2,7 +2,7 @@
 SPDX-FileCopyrightText: 2018 - 2022 Slavi Pantaleev
 SPDX-FileCopyrightText: 2019 - 2023 MDAD project contributors
 SPDX-FileCopyrightText: 2020 Marcel Partap
-SPDX-FileCopyrightText: 2024 Suguru Hirahara
+SPDX-FileCopyrightText: 2024 - 2025 Suguru Hirahara
 
 SPDX-License-Identifier: AGPL-3.0-or-later
 -->
@@ -13,7 +13,9 @@ The playbook can install and configure the [matrix-synapse-ldap3](https://github
 
 See the project's [documentation](https://github.com/matrix-org/matrix-synapse-ldap3/blob/main/README.rst) to learn what it does and why it might be useful to you.
 
-If you decide that you'd like to let this playbook install it for you, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file (adapt to your needs):
+## Adjusting the playbook configuration
+
+Add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file (adapt to your needs):
 
 ```yaml
 matrix_synapse_ext_password_provider_ldap_enabled: true
@@ -30,9 +32,9 @@ matrix_synapse_ext_password_provider_ldap_bind_password: ""
 matrix_synapse_ext_password_provider_ldap_filter: ""
 ```
 
-## Authenticating only using a password provider
+### Authenticating only using a password provider
 
-If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, feel free to disable it:
+If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, you can disable it by adding the following configuration to your `vars.yml` file:
 
 ```yaml
 matrix_synapse_password_config_localdb_enabled: false

docs/configuring-playbook-rest-auth.md

@@ -1,7 +1,7 @@
 <!--
 SPDX-FileCopyrightText: 2018 - 2019 Slavi Pantaleev
 SPDX-FileCopyrightText: 2019 - 2020 Marcel Partap
-SPDX-FileCopyrightText: 2024 Suguru Hirahara
+SPDX-FileCopyrightText: 2024 - 2025 Suguru Hirahara
 
 SPDX-License-Identifier: AGPL-3.0-or-later
 -->
@@ -24,9 +24,9 @@ matrix_synapse_ext_password_provider_rest_auth_registration_profile_name_autofil
 matrix_synapse_ext_password_provider_rest_auth_login_profile_name_autofill: false
 ```
 
-## Authenticating only using a password provider
+### Authenticating only using a password provider
 
-If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, feel free to disable it:
+If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, you can disable it by adding the following configuration to your `vars.yml` file:
 
 ```yaml
 matrix_synapse_password_config_localdb_enabled: false

docs/configuring-playbook-shared-secret-auth.md

@@ -1,7 +1,7 @@
 <!--
 SPDX-FileCopyrightText: 2018 - 2020 Slavi Pantaleev
 SPDX-FileCopyrightText: 2020 MDAD project contributors
-SPDX-FileCopyrightText: 2024 Suguru Hirahara
+SPDX-FileCopyrightText: 2024 - 2025 Suguru Hirahara
 
 SPDX-License-Identifier: AGPL-3.0-or-later
 -->
@@ -23,9 +23,9 @@ matrix_synapse_ext_password_provider_shared_secret_auth_enabled: true
 matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret: YOUR_SHARED_SECRET_GOES_HERE
 ```
 
-## Authenticating only using a password provider
+### Authenticating only using a password provider
 
-If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, feel free to disable it:
+If you wish for users to **authenticate only against configured password providers** (like this one), **without consulting Synapse's local database**, you can disable it by adding the following configuration to your `vars.yml` file:
 
 ```yaml
 matrix_synapse_password_config_localdb_enabled: false