Improve comment

Rephrase to simplify and add a link to the issue.

server/src/main/java/com/genymobile/scrcpy/wrappers/SurfaceControl.java

@@ -78,8 +78,8 @@ public final class SurfaceControl {
 
     public static IBinder getBuiltInDisplay(int builtInDisplayId) {
         try {
-            // Android Q does not have this method anymore but has a
-            // replacement.
+            // the method signature has changed in Android Q
+            // <https://github.com/Genymobile/scrcpy/issues/586>
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
                 return (IBinder) CLASS.getMethod("getBuiltInDisplay", int.class).invoke(null, builtInDisplayId);
             } else {