fix(dial-in): update jsdoc

react/features/invite/components/dial-in-summary/NumbersList.web.js

     /**
      * Renders rows of countries and associated phone numbers.
      *
-     * @param {Object} numbersMapping - Things yeah.
+     * @param {Object} numbersMapping - An object with country names as keys
+     * and values as arrays of phone numbers.
      * @private
      * @returns {ReactElement[]}
      */