Update stdlib/lazy.mli

Co-authored-by: Alain Frisch <alain@frisch.fr>

stdlib/lazy.mli

@@ -88,7 +88,7 @@ val is_val : 'a t -> bool
 val from_val : 'a -> 'a t
 (** [from_val v] evaluates [v] first (as any function would) and returns
     an already-forced suspension of its result.
-    It is the same as [let x = v in lazy x], but use dynamic tests
+    It is the same as [let x = v in lazy x], but uses dynamic tests
     to optimize suspension creation in some cases.
     @since 4.00.0 *)