Duplicate provided version warning in getting-started.md

documentation/src/main/paradox/getting-started.md

@@ -12,4 +12,8 @@ This will pull in the core endless module, containing typeclasses and interprete
 
 Akka runtime is available in `endless-runtime-akka`, and some extra helpers for circe in `endless-circe-helpers`: add those as dependencies to your infrastructure module.
 
-You can also clone this repository and run the example application with `sbt run`. 
+You can also clone this repository and run the example application with `sbt run`. 
+
+@@@ warning { title="Compatibility" }
+Since Akka [does not allow mixed versions](https://doc.akka.io/docs/akka/current/common/binary-compatibility-rules.html#mixed-versioning-is-not-allowed) in a project, Akka dependencies of `endless-runtime-akka` are marked a `Provided`. This means that your application `libraryDependencies` needs to directly include Akka as a dependency. The minimal supported Akka version is $akka.min.version$.  
+@@@