Update testData for changed diagnostic messages

idea/testData/quickfix/modifiers/noAbstractForAnonymousObject.kt

@@ -2,7 +2,7 @@
 // ACTION: Implement members
 // ACTION: Split property declaration
 // ACTION: Convert object literal to class
-// ERROR: Object must be declared abstract or implement abstract member public abstract fun foo(): Unit defined in T
+// ERROR: Object is not abstract and does not implement abstract member public abstract fun foo(): Unit defined in T
 interface T {
     fun foo()
 }