Convert added README.md text to note

Co-authored-by: Oliver Pajonk <oliver@pjnk.de>
Signed-off-by: lurtz <727209+lurtz@users.noreply.github.com>

Author: 2 people

README.md

@@ -1,4 +1,6 @@
 # communication
 Repository for the communication module LoLa
 
-For setting up the devcontainer and enabling code completion read [eclipse-score/devcontainer/README.md#inside-the-container](https://github.com/eclipse-score/devcontainer/blob/main/README.md#inside-the-container).
+> [!NOTE]
+> This repository offers a [DevContainer](https://containers.dev/).
+> For setting this up and enabling code completion read [eclipse-score/devcontainer/README.md#inside-the-container](https://github.com/eclipse-score/devcontainer/blob/main/README.md#inside-the-container).