message: add asserts and word alias correctly
diff: This example shows how to create a wallet from english mnemonics
  ```C
  -const char *alias = "Awesome Wallet";
  char *MNEMONICS = "crowd captain hungry tray powder motor coast oppose month shed parent mystery torch resemble index";
  /*Retrieve entropy from mnemonics*/
  @@ -11,12 +10,18 @@ cardano_entropy entropy;
  uint32_t bytes;
  cardano_bip39_error_t entropy_rc = cardano_entropy_from_english_mnemonics(MNEMONICS, &entropy, &bytes);
  +/*Check that the mnemonics were actually valid*/
  +assert(entropy_rc == BIP39_SUCCESS);
  +
  /*Create a wallet with the given entropy*/
  char *password = "password";
  cardano_wallet *wallet;
  cardano_result wallet_rc = cardano_wallet_new(entropy, bytes, password, strlen(password), &wallet);
  +assert(wallet_rc == CARDANO_RESULT_SUCCESS);
  +
  /*Create an account*/
  +const char *alias = "Awesome Account";
  unsigned int index = 0;
  cardano_account *account = cardano_account_create(wallet, alias, index);
  