Improve rest args docs

src/client/Client.js

@@ -349,7 +349,7 @@ class Client extends EventEmitter {
    * Sets a timeout that will be automatically cancelled if the client is destroyed.
    * @param {Function} fn Function to execute
    * @param {number} delay Time to wait before executing (in milliseconds)
-   * @param {args} args Arguments for the function (infinite/rest argument, not an array)
+   * @param {...*} args Arguments for the function
    * @returns {Timeout}
    */
   setTimeout(fn, delay, ...args) {
@@ -374,7 +374,7 @@ class Client extends EventEmitter {
    * Sets an interval that will be automatically cancelled if the client is destroyed.
    * @param {Function} fn Function to execute
    * @param {number} delay Time to wait before executing (in milliseconds)
-   * @param {args} args Arguments for the function (infinite/rest argument, not an array)
+   * @param {...*} args Arguments for the function
    * @returns {Timeout}
    */
   setInterval(fn, delay, ...args) {

src/util/Collection.js

@@ -305,7 +305,7 @@ class Collection extends Map {
 
   /**
    * Combines this collection with others into a new collection. None of the source collections are modified.
-   * @param {Collection} collections Collections to merge (infinite/rest argument, not an array)
+   * @param {...Collection} collections Collections to merge
    * @returns {Collection}
    * @example const newColl = someColl.concat(someOtherColl, anotherColl, ohBoyAColl);
    */