fix check file

Author: soronpo

tests/neg/singleton-ops-any.check

@@ -1,39 +1,39 @@
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:6:23 --------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:6:23 --------------------------------------------------
 6 |  val t34: 10 == "5" = true // error
   |                       ^^^^
   |                       Found:    (true : Boolean)
   |                       Required: (false : Boolean)
 
 longer explanation available when compiling with `-explain`
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:7:22 --------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:7:22 --------------------------------------------------
 7 |  val t35: 10 == 10 = false // error
   |                      ^^^^^
   |                      Found:    (false : Boolean)
   |                      Required: (true : Boolean)
 
 longer explanation available when compiling with `-explain`
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:12:24 -------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:12:24 -------------------------------------------------
 12 |  val t38: false != 5 = false // error
    |                        ^^^^^
    |                        Found:    (false : Boolean)
    |                        Required: (true : Boolean)
 
 longer explanation available when compiling with `-explain`
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:13:22 -------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:13:22 -------------------------------------------------
 13 |  val t39: 10 != 10 = true // error
    |                      ^^^^
    |                      Found:    (true : Boolean)
    |                      Required: (false : Boolean)
 
 longer explanation available when compiling with `-explain`
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:18:27 -------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:18:27 -------------------------------------------------
 18 |  val t04: ToString[Int] = "Int" // error
    |                           ^^^^^
    |                           Found:    ("Int" : String)
    |                           Required: compiletime.ops.any.ToString[Int]
 
 longer explanation available when compiling with `-explain`
--- [E007] Type Mismatch Error: tests\neg\singleton-ops-any.scala:32:26 -------------------------------------------------
+-- [E007] Type Mismatch Error: tests/neg/singleton-ops-any.scala:32:26 -------------------------------------------------
 32 |  val t48: IsConst[Any] = true // error
    |                          ^^^^
    |                          Found:    (true : Boolean)