fix(docs): copy&paste error for setIsReplaced

JitsiParticipant.js

 
     /**
      * Sets whether participant is being replaced by another based on jwt.
-     * @param {String} newIsReplacing - whether is being replaced.
+     * @param {boolean} newIsReplaced - whether is being replaced.
      */
     setIsReplaced(newIsReplaced) {
         this._isReplaced = newIsReplaced;