Update DEVELOPMENT.md

Author: WinG4merBR

docs/DEVELOPMENT.md

@@ -39,7 +39,7 @@ Build the project with Gradle by running:
 
 > If you have Gradle installed globally, you can use `gradle build` instead of `./gradlew build`.
 
-> If Gradle reports missing methods or unsupported features in your JDK, update to the latest JDK 17+ version from [Adoptium](https://adoptium.net/).
+> If Gradle reports missing methods or unsupported features in your JDK, update to the latest JDK 21+ version from [Adoptium](https://adoptium.net/).
 
 ## Running Foxy
 ### Requirements
@@ -79,4 +79,4 @@ If everything is configured correctly, Foxy will start successfully without unex
 
 ```bash
 java -jar foxy/build/libs/Foxy-VERSION.jar
-```
+```