Fix rendering of [!IMPORTANT] in docs

Author: david-pl

docs/index.md

@@ -10,9 +10,11 @@
 [![codecov](https://codecov.io/github/QuEraComputing/bloqade-analog/graph/badge.svg?token=4YJFc45Jyl)](https://codecov.io/github/QuEraComputing/bloqade-analog)
 ![CI](https://github.com/QuEraComputing/bloqade-analog/actions/workflows/ci.yml/badge.svg)
 
-> [!IMPORTANT]
->
-> Bloqade has been restructured to make room for new features and improvements. Please refer to the [migration guide](./home/migration/) for more information.
+!!! note
+
+  Bloqade has been restructured to make room for new features and improvements.
+  Please refer to the [migration guide](./home/migration/) for more information.
+
 
 # **Welcome to Bloqade**: QuEra's Neutral Atom SDK