[FIR] Clarify testData for invokes

compiler/fir/analysis-tests/testData/resolve/expresssions/invoke/explicitReceiver2.kt

@@ -1,6 +1,6 @@
 
 class Bar {
-    operator fun invoke(): Foo { return this }
+    operator fun invoke(): Foo { return this } // (1)
 
 }
 
@@ -11,9 +11,9 @@ fun x() {
 class Foo {
 
 
-    operator fun Bar.invoke(): Foo { return this }
+    operator fun Bar.invoke(): Foo { return this } // (2)
 
     val x: Bar = Bar()
 
-    fun bar() = x() // Should resolve to invoke
+    fun bar() = x() // Should resolve to invoke (1)
 }