update check files

Author: olhotak

tests/neg/unroll-abstractMethod.check

@@ -1,8 +1,8 @@
 -- [E207] Declaration Error: tests/neg/unroll-abstractMethod.scala:6:41 ------------------------------------------------
 6 |  def foo(s: String, n: Int = 1, @unroll b: Boolean = true): String // error
   |                                         ^
-  |                                         Cannot unroll parameters of method foo: it is not effectively final
+  |                                         Cannot unroll parameters of method foo because it can be overridden
 -- [E207] Declaration Error: tests/neg/unroll-abstractMethod.scala:10:41 -----------------------------------------------
 10 |  def foo(s: String, n: Int = 1, @unroll b: Boolean = true): String // error
    |                                         ^
-   |                                         Cannot unroll parameters of method foo: it is not effectively final
+   |                                         Cannot unroll parameters of method foo because it can be overridden

tests/neg/unroll-illegal3.check

@@ -5,8 +5,8 @@
 -- [E207] Declaration Error: tests/neg/unroll-illegal3.scala:12:29 -----------------------------------------------------
 12 |  def foo(s: String, @unroll y: Boolean) = s + y // error
    |                             ^
-   |                             Cannot unroll parameters of method foo: it is not effectively final
+   |                             Cannot unroll parameters of method foo because it can be overridden
 -- [E207] Declaration Error: tests/neg/unroll-illegal3.scala:16:29 -----------------------------------------------------
 16 |  def foo(s: String, @unroll y: Boolean): String // error
    |                             ^
-   |                             Cannot unroll parameters of method foo: it is not effectively final
+   |                             Cannot unroll parameters of method foo because it can be overridden