fix staticcheck failures of pkg/probe/http

Author: SataQiu

hack/.staticcheck_failures

@@ -6,7 +6,6 @@ pkg/controller/podautoscaler
 pkg/controller/replicaset
 pkg/controller/resourcequota
 pkg/controller/statefulset
-pkg/probe/http
 pkg/registry/autoscaling/horizontalpodautoscaler/storage
 pkg/registry/core/namespace/storage
 pkg/registry/core/persistentvolumeclaim/storage

pkg/probe/http/http_test.go

@@ -73,7 +73,7 @@ func TestHTTPProbeProxy(t *testing.T) {
 
 	go func() {
 		http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-			fmt.Fprintf(w, res)
+			fmt.Fprint(w, res)
 		})
 		err := http.ListenAndServe(":9098", nil)
 		if err != nil {