cnat-kubebuilder: fix broken quickstart link (#11)

Signed-off-by: Stevo Slavić <[email protected]>

Author: sslavic

cnat-kubebuilder/README.md

@@ -1,6 +1,6 @@
 # Development
 
-Install [Kubebuilder](https://book.kubebuilder.io/quick_start.html) and then bootstrap the `At` operator as follows:
+Install [Kubebuilder](https://book.kubebuilder.io/quick-start.html) and then bootstrap the `At` operator as follows:
 
 ```bash
 $ mkdir cnat-kubebuilder && cd $_
@@ -51,4 +51,4 @@ pod/example-at-pod   0/1     Completed     0          32s
 ## Implement business logic
 
 * In [at_types.go](pkg/apis/cnat/v1alpha1/at_types.go): we modify the `AtSpec` struct to include the respective fields such as `schedule` and `command`. Note that you must run `make` whenever you change something here in order to regenerate the controller code. 
-* In [at_controller.go](pkg/controller/at/at_controller.go): we modify the `Reconcile(request reconcile.Request)` method to create a pod at the time defined in `Spec.Schedule`.
+* In [at_controller.go](pkg/controller/at/at_controller.go): we modify the `Reconcile(request reconcile.Request)` method to create a pod at the time defined in `Spec.Schedule`.