Typo in hide.exec.yml

Author: wadoon

key.core/src/test/resources/de/uka/ilkd/key/macros/scripts/hide.exec.yml

@@ -4,7 +4,7 @@ key: |
 script: |
   macro split-prop;
   hide "b ==>";
-exception: |2
+exception: |-
 
   Error while executing script: This formula is not on the sequent: b