doc: add missing options.signal to readlinePromises.createInterface()

From the source code, `readlinePromises.createInterface()` calls `new Interface()` imported from `internal/readline/interface`, which works the same as the non-promise version. If non-promise version accepts options.signal, it should also work for `readlinePromises.createInterface()`. Hence this information need to be indicated in the documentation. Refs: https://github.com/nodejs/node/blob/main/lib/readline/promises.js PR-URL: #55456 Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: hkleungai

doc/api/readline.md

@@ -706,6 +706,7 @@ added: v17.0.0
  **Default:** `500`.
  * `tabSize` {integer} The number of spaces a tab is equal to (minimum 1).
  **Default:** `8`.
+ * `signal` {AbortSignal} Allows closing the interface using an AbortSignal.
 * Returns: {readlinePromises.Interface}
 
 The `readlinePromises.createInterface()` method creates a new `readlinePromises.Interface`