Jg type comments (#1469)

* Add some field-level comments on the keyring

* CHANGELOG

packages/keyring/src/types.ts

@@ -5,7 +5,13 @@ import type { HexString } from '@polkadot/util/types';
 import type { EncryptedJson, Keypair, KeypairType, Prefix } from '@polkadot/util-crypto/types';
 
 export interface KeyringOptions {
+  /**
+   * @description The ss58Format to use for address encoding (defaults to 42)
+   */
   ss58Format?: Prefix;
+  /**
+   * @description The type of keyring to create (defaults to ed25519)
+   */
   type?: KeypairType;
 }
 
@@ -17,6 +23,9 @@ export interface KeyringPair$Json extends EncryptedJson {
 }
 
 export interface SignOptions {
+  /**
+   * @description Create a MultiSignature-compatible output with an indicator type
+   **/
   withType?: boolean;
 }