[docs] JDK 11+ docs updated
Below are listed the Java 11+ JDK distributions against which TornadoVM has been tested, but compatibility is not guaranteed.
```
- Red Hat Mandrel 11.0.9
- Amazon Coretto 11.0.9
- GraalVM LabsJDK 11.0.8
+ Red Hat Mandrel 11.0.9 (Mandrel 20.2.0 Final)
+ Amazon Corretto 11.0.9
+ GraalVM LabsJDK 11.0.8 (GraalVM 20.2.0)
OpenJDK 11.0.8
OpenJDK 12.0.2
OpenJDK 13.0.2
