message: Update README grammar
diff: @@ -84,7 +84,7 @@ coins.forEach((coin) => {
  * `src/networks.ts`: Network interfaces and implementation classes.
  * `src/utxo.ts`: Unspent Transaction Output (UTXO) based coin classes and factory function.
  * `src/account.ts`: Account-based coin classes and factory methods. Includes ERC20 factory functions.
  -* `src/errors.ts`: Custom Error classes
  +* `src/errors.ts`: Custom Error classes.
  ## Installation + Building
  To install the project locally, run the following steps:
  