message: Update README.md
  Fix a Typo.
diff: @@ -226,7 +226,7 @@ const myResolverMap = {
  NOTE: `NonNegativeFloat` and `NonNegativeInt` are also available under the aliases `UnsignedFloat`
  and `UnsignedInt`, respectively.
  -NOTE: `BigInt` is also available under the alias `BigInt`.
  +NOTE: `BigInt` is also available under the alias `Long`.
  NOTE: `UUID` is also available under the alias `GUID`.
  