Minor fix

Author: maria-robobug

_code-samples/verify-credential/js/README.md

@@ -5,26 +5,28 @@ Verifies that a specific credential exists on the XRPL and is valid.
 Quick install & usage:
 
 ```sh
-blob
+npm install
 ```
 
 `verify_credential.js` can also be used as a commandline utility. Full usage statement:
 
 ```sh
 $ ./verify_credential.js -h
-usage: verify_credential.js [-h] [-b] [-n {devnet,testnet,mainnet}]
-                            [issuer] [subject] [credential_type]
 
-Verify an XRPL credential
+Usage: verify-credential [options] [issuer] [subject] [credential_type]
 
-positional arguments:
-  issuer                Credential issuer address as base58.
-  subject               Credential subject (holder) address as base58.
-  credential_type       Credential type as string
+Verify an XRPL credential
 
-options:
-  -h, --help            show this help message and exit
-  -b, --binary          Use binary (hexadecimal) for credential_type
-  -n, --network {devnet,testnet,mainnet}
-                        Use the specified network for lookup
+Arguments:
+  issuer                                            Credential issuer address as base58 (default:
+                                                    "rEzikzbnH6FQJ2cCr4Bqmf6c3jyWLzkonS")
+  subject                                           Credential subject (holder) address as base58 (default:
+                                                    "rsYhHbanGpnYe3M6bsaMeJT5jnLTfDEzoA")
+  credential_type                                   Credential type as string. (default: "my_credential")
+
+Options:
+  -b, --binary                                      Use binary (hexadecimal) for credential_type
+  -n, --network <network> {devnet,testnet,mainnet}  Use the specified network for lookup (default: "devnet")
+  -q, --quiet                                       Don't print log messages
+  -h, --help                                        display help for command
 ```

_code-samples/verify-credential/js/verify_credential.js

@@ -30,12 +30,11 @@ async function verifyCredential(client, issuer, subject, credentialType, binary=
    * as of the most recently validated ledger.
    * Parameters:
    *  client - Client for interacting with rippled servers.
-   *  issuer - Address of the credential issuer, in base58
-   *  subject - Address of the credential holder/subject, in base58
+   *  issuer - Address of the credential issuer, in base58.
+   *  subject - Address of the credential holder/subject, in base58.
    *  credentialType - Credential type to check for as a string,
    *                   which will be encoded as UTF-8 (1-128 bytes long).
    *  binary - Specifies that the credential type is provided in hexadecimal format.
-   *  verbose - If true, print details to stdout during lookup.
    * You must provide the credential_type as input.
    * Returns True if the account holds the specified, valid credential.
    * Returns False if the credential is missing, expired, or not accepted.
@@ -81,7 +80,7 @@ async function verifyCredential(client, issuer, subject, credentialType, binary=
       logger.info("Credential was not found");
       return false;
     } else {
-      //Other errors, for example invalidly-specified addresses.
+      // Other errors, for example invalidly pecified addresses.
       throw new XRPLLookupError(xrplResponse);
     }
   }
@@ -129,7 +128,7 @@ async function verifyCredential(client, issuer, subject, credentialType, binary=
 
 // Commandline usage -----------------------------------------------------------
 async function main() {
-  // JSON-RPC URLs of public servers
+  // Websocket URLs of public servers
   const NETWORKS = {
     devnet: "wss://s.devnet.rippletest.net:51233",
     testnet: "wss://s.altnet.rippletest.net:51233",