fixed admonition type

Author: CosiMichele

docs/07_containers.md

@@ -128,7 +128,7 @@ Docker commands in the terminal use the prefix `docker`.
 
 !!! Note "For every command listed, the correct execution of the commands through the command line is by using `docker` in front of the command: for example `docker help` or `docker search`. Thus, every :material-docker: = `docker`."
 
-!!! Important "To follow along, please start a Codespace in the following repository: **https://github.com/jeffgillan/r-script-containerized**. We are going to be using this repository throughout today, to learn docker commands, run docker containers and building our own container."
+!!! Warning "To follow along, please start a Codespace in the following repository: **https://github.com/jeffgillan/r-script-containerized**. We are going to be using this repository throughout today, to learn docker commands, run docker containers and building our own container."
 
 ### :material-docker: help