Fix typo

Author: kris-luminar

dist/vue-clickaway.js

@@ -45,7 +45,7 @@
     }, 0);
 
     el[HANDLER] = function(ev) {
-      // @NOTE: this test used to be just `el.containts`, but working with path is better,
+      // @NOTE: this test used to be just `el.contains`, but working with path is better,
       //        because it tests whether the element was there at the time of
       //        the click, not whether it is there now, that the event has arrived
       //        to the top.