Org doc change

Author: uttamukkoji

lib/contentstackClient.js

@@ -102,7 +102,7 @@ export default function contentstackClient ({ http }) {
    * import * as contentstack from '@contentstack/management'
    * const client = contentstack.client()
    *
-   * client.organization().query().find()
+   * client.organization().findAll()
    * .then((organization) => console.log(organization))
    *
    * @example

lib/stack/index.js

@@ -554,7 +554,7 @@ export function Stack (http, data) {
      * @description A role is a collection of permissions that will be applicable to all the users who are assigned this role.
      * @memberof Stack
      * @func role
-     * @param {String} uid The UID of the role you want to get details.
+     * @param {String=} uid The UID of the role you want to get details.
      * @returns {Role} Instance of Role.
      *
      * @example