Fix tests after implementing trailing comma in formatter

#KT-34744

idea/testData/inspectionsLocal/collections/simplifiableCallChain/joinToStringWithReferenceAndComment.kt.after

@@ -4,9 +4,8 @@ val x = listOf(1, 2, 3).joinToString(
         // comment2
         prefix = "= ",
         // comment3
-        separator = " + "
+        separator = " + ",
         // comment4
-        ,
         // comment1
-        transform = Int::toString
+        transform = Int::toString,
 )

idea/testData/inspectionsLocal/collections/simplifiableCallChain/joinToWithComment.kt.after

@@ -7,6 +7,6 @@ val x = listOf(1, 2, 3).joinTo(
         // comment2
         prefix = "= ",
         // comment3
-        separator = " + "
+        separator = " + ",
         // comment4
 ) { "$it*$it" }

idea/testData/inspectionsLocal/collections/simplifiableCallChain/listOfNotNullWithComment.kt.after

@@ -3,6 +3,6 @@
 fun test() {
     <caret>listOfNotNull(
             true, // comment1
-            null // comment2
+            null, // comment2
     ).first()
 }