Converter:

Use formatter in converter tests
Reformat test data

j2k/tests/testData/ast/function/override.kt

@@ -1,8 +1,8 @@
 open class A() {
-open fun a() {
-}
+    open fun a() {
+    }
 }
 class B() : A() {
-override fun a() {
-}
+    override fun a() {
+    }
 }