Replace "Note" with "Warning" considering the significance

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

docs/configuring-playbook-bridge-appservice-kakaotalk.md

@@ -2,7 +2,7 @@
 
 The playbook can install and configure [matrix-appservice-kakaotalk](https://src.miscworks.net/fair/matrix-appservice-kakaotalk) for you. `matrix-appservice-kakaotalk` is a bridge to [Kakaotalk](https://www.kakaocorp.com/page/service/service/KakaoTalk?lang=ENG) based on [node-kakao](https://github.com/storycraft/node-kakao) (now unmaintained) and some [mautrix-facebook](https://github.com/mautrix/facebook) code.
 
-**Note**: there have been recent reports (~2022-09-16) that **using this bridge may get your account banned**.
+⚠️ **Warning**: there have been recent reports (~2022-09-16) that **using this bridge may get your account banned**.
 
 See the project's [documentation](https://src.miscworks.net/fair/matrix-appservice-kakaotalk) to learn what it does and why it might be useful to you.
 

docs/installing.md

@@ -53,7 +53,7 @@ To do the installation **without** starting services, run `ansible-playbook` wit
 ansible-playbook -i inventory/hosts setup.yml --tags=install-all
 ```
 
-**Note**: do not run the just "recipe" `just install-all` instead, because it automatically starts services at the end of execution. See: [Difference between playbook tags and shortcuts](just.md#difference-between-playbook-tags-and-shortcuts)
+⚠️ **Warning**: do not run the just "recipe" `just install-all` instead, because it automatically starts services at the end of execution. See: [Difference between playbook tags and shortcuts](just.md#difference-between-playbook-tags-and-shortcuts)
 
 When this command completes, services won't be running yet.