correct the pathname for the test

Author: Jake Champion

integration-tests/js-compute/fixtures/timers/tests.json

@@ -497,7 +497,7 @@
     ],
     "downstream_request": {
       "method": "GET",
-      "pathname": "/clearTimeout/called-unboun"
+      "pathname": "/clearTimeout/called-unbound"
     },
     "downstream_response": {
       "status": 200