GreatSyntacticShift: Codegen testdata fixed

compiler/testData/codegen/regressions/kt772.jet

@@ -1,18 +1,18 @@
-namespace demo2
+package demo2
 
 fun print(o : Any?) {}
 
 fun test(i : Int) {
     var monthString : String? = "<empty>"
         when (i) {
-        1 => {
+        1 -> {
             print(1)
             print(2)
             print(3)
             print(4)
             print(5)
         }
-       else => {
+       else -> {
             monthString = "Invalid month"
         }
     }