Merge pull request #2419 from liril-net/dev

Popper: Fixing getPosition comments

src/utils/popper.js

@@ -369,7 +369,8 @@
      * @method
      * @memberof Popper
      * @param config {HTMLElement} popper element
-     * @returns {HTMLElement} reference element
+     * @param reference {HTMLElement} reference element
+     * @returns {String} position
      */
     Popper.prototype._getPosition = function(popper, reference) {
         var container = getOffsetParent(reference);