Update docs/configuring-playbook-bot-baibot.md: add the common section "Extending the configuration"

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

docs/configuring-playbook-bot-baibot.md

@@ -153,8 +153,6 @@ matrix_bot_baibot_config_agents_static_definitions_anthropic_config_api_key: "YO
 # You can adjust it in the `matrix_bot_baibot_config_agents_static_definitions_prompt` variable,
 # or you can adjust it below only for the Anthropic agent.
 # matrix_bot_baibot_config_agents_static_definitions_anthropic_config_text_generation_prompt: "{{ matrix_bot_baibot_config_agents_static_definitions_prompt }}"
-
-# See `defaults/main.yml` in the baibot role for more configuration options.
 ```
 
 If you'd like to use more than one model, take a look at the [Configuring additional agents (without a preset)](#configuring-additional-agents-without-a-preset) section below.
@@ -184,8 +182,6 @@ matrix_bot_baibot_config_agents_static_definitions_groq_config_text_generation_m
 #
 # matrix_bot_baibot_config_agents_static_definitions_groq_config_speech_to_text_enabled: true
 # matrix_bot_baibot_config_agents_static_definitions_groq_config_speech_to_text_model_id: whisper-large-v3
-
-# See `defaults/main.yml` in the baibot role for more configuration options.
 ```
 
 Because this is a [statically](https://github.com/etkecc/baibot/blob/main/docs/configuration/README.md#static-configuration)-defined agent, it will be given a `static/` ID prefix and will be named `static/groq`.
@@ -212,8 +208,6 @@ matrix_bot_baibot_config_agents_static_definitions_mistral_config_api_key: "YOUR
 
 # Uncomment and adjust this part if you're not happy with these defaults:
 # matrix_bot_baibot_config_agents_static_definitions_mistral_config_text_generation_model_id: mistral-large-latest
-
-# See `defaults/main.yml` in the baibot role for more configuration options.
 ```
 
 Because this is a [statically](https://github.com/etkecc/baibot/blob/main/docs/configuration/README.md#static-configuration)-defined agent, it will be given a `static/` ID prefix and will be named `static/mistral`.
@@ -242,8 +236,6 @@ matrix_bot_baibot_config_agents_static_definitions_openai_config_api_key: "YOUR_
 
 # If you'd like to use another text-generation agent, uncomment and adjust:
 # matrix_bot_baibot_config_agents_static_definitions_openai_config_text_generation_model_id: gpt-4o
-
-# See `defaults/main.yml` in the baibot role for more configuration options.
 ```
 
 Because this is a [statically](https://github.com/etkecc/baibot/blob/main/docs/configuration/README.md#static-configuration)-defined agent, it will be given a `static/` ID prefix and will be named `static/openai`.
@@ -362,6 +354,15 @@ matrix_bot_baibot_config_initial_global_config_handler_image_generation: null
 
 **Note**: these are initial defaults for the bot's global configuration. As such, changing any of these values subsequently has no effect on the bot's behavior. **Once initially configured the global configuration cannot be managed Ansible**, but only via bot commands.
 
+### Extending the configuration
+
+There are some additional things you may wish to configure about the bot.
+
+Take a look at:
+
+- `roles/custom/matrix-bot-baibot/defaults/main.yml` for some variables that you can customize via your `vars.yml` file
+- `roles/custom/matrix-bot-baibot/templates/config.yaml.j2` for the bot's default configuration. You can override settings (even those that don't have dedicated playbook variables) using the `matrix_bot_baibot_configuration_extension_yaml` variable
+
 ## Installing
 
 After configuring the playbook, run it with [playbook tags](playbook-tags.md) as below: