adjust repl test position

fix is a big word -- I'm not sure where it's pointing now
is any better than where it was.

Author: martijnhoekstra

compiler/test-resources/repl/i6676

@@ -7,8 +7,8 @@ scala> xml"
   |     ';' expected, but eof found
 scala> xml""
 1 | xml""
-  |    ^
-  |    value xml is not a member of StringContext
+  |     ^
+  |     value xml is not a member of StringContext
 scala> xml"""
 1 | xml"""
   |    ^