std: fix typo

std/builtin.jule

@@ -72,7 +72,7 @@ const false = !true
 // Nil memory.
 const nil = nil
 
-// Prints t to stout.
+// Prints t to stdout.
 //
 // Before printing the value will be converted to string. For string conversion,
 // Jule's runtime package will be used, always. For types that contain special string