Update check file

Author: odersky

tests/neg/exports.check

@@ -11,7 +11,7 @@
 25 |    export printUnit.bitmap         // error: no eligible member
    |                     ^
    |                     non-private method bitmap in class Copier refers to private value printUnit
-   |                     in its type signature => Copier.this.printUnit.bitmap.type
+   |                     in its type signature => Copier.this.printUnit.bitmap$
 -- [E120] Duplicate Symbol Error: tests/neg/exports.scala:23:33 --------------------------------------------------------
 23 |    export printUnit.{stat => _, _} // error: double definition
    |                                 ^