Update styleguide.md

src/content/docs/4788/styleguide.md

@@ -3,4 +3,4 @@ title: Styleguide
 description: 4788's code styleguide
 ---
 
-We use the [WPILib styleguide for Java](https://github.com/wpilibsuite/styleguide/blob/main/README.md)
+We use the [WPILib styleguide for Java](https://github.com/wpilibsuite/styleguide/blob/main/README.md), enforced using spotless, spotbugs and pmd. You can check if your code complies by running `./gradlew build -PwithJavaFormat`. In order for any code to be merged it **must** pass these checks.