Corrections

Author: Dedelweiss

docs/_spec/TODOreference/dropped-features/nonlocal-returns.md

@@ -13,12 +13,14 @@ A drop-in library replacement is provided in [`scala.util.control.NonLocalReturn
 
 ```scala
 import scala.util.control.NonLocalReturns.*
+
 extension [T](xs: List[T])
   def has(elem: T): Boolean = returning {
     for x <- xs do
       if x == elem then throwReturn(true)
     false
   }
+
 @main def test(): Unit =
   val xs = List(1, 2, 3, 4, 5)
   assert(xs.has(2) == xs.contains(2))