message: Update crypto package README.md
diff: @@ -10,6 +10,8 @@ and [cosmwasm-std](`https://crates.io/crates/cosmwasm-std`) crates.
  - `secp256k1_verify()`: Digital signature verification using the ECDSA sepc256k1
  scheme, for Cosmos signature / public key formats.
  +- `ed25519_verify()`: Digital signature verification using the EdDSA ed25519
  + scheme, for Tendemint signature / public key formats.
  ## License
  