Update src/stdlib_experimental_kinds.f90

Co-Authored-By: Jeremie Vandenplas <[email protected]>

Author: certik

src/stdlib_experimental_kinds.f90

@@ -6,5 +6,5 @@ module stdlib_experimental_kinds
 use iso_c_binding, only: int8=>c_int8_t, int16=>c_int16_t, int32=>c_int32_t, int64=>c_int64_t
 implicit none
 private
-public sp, dp, qp, int32, int64, int128
+public sp, dp, qp, int8, int16, int32, int64
 end module