Fix Alert typo in README.md

https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#alerts

README.md

@@ -118,7 +118,7 @@ fun main() {
 }
 ```
 
-> ![NOTE]
+> [!NOTE]
 > 
 > There is a fork of this repository available which utilizes the Amper tool for project configuration, recently [introduced by JetBrains][amper].
 >