Updated the comment

Author: cs-raj

lib/contentstackClient.js

@@ -33,9 +33,9 @@ export default function contentstackClient ({ http }) {
    * @param {Object} requestBody - Login credentials
    * @param {string} requestBody.email - Email address
    * @param {string} requestBody.password - Password
-   * @param {string} [requestBody.token] - 2FA token
-   * @param {string} [requestBody.tfa_token] - Alternative 2FA token
+   * @param {string} [requestBody.tfa_token] - 2FA Token
    * @param {string} [requestBody.mfaSecret] - TOTP secret key for generating 2FA token
+   * @param {string} [requestBody.token] - token for user to login
    * @param {Object} params - Additional parameters
    * @returns {Promise}
    */