Fix code spell check

Signed-off-by: Manuel Buil <mbuil@suse.com>

docs/adrs/core-controller-user.md

@@ -17,7 +17,7 @@ Users may have policies in place that prohibit use of the `system:admin` account
 
 * We will add a new kubeconfig for the K3s supervisor controllers: core functionality, deploy (AddOns; aka the manifests directory), and helm (HelmChart/HelmChartConfig).
 * Each of the three controllers will use a dedicated user-agent to further assist in discriminating between events, via both audit logs and resource ManageFields tracking.
-* The new user account will use exisiting core Kubernetes group RBAC.
+* The new user account will use existing core Kubernetes group RBAC.
 
 ## Consequences
 

pkg/agent/tunnel/tunnel.go

@@ -337,7 +337,7 @@ func (a *agentTunnel) watchEndpoints(ctx context.Context, apiServerReady <-chan
 			var debounceCtx context.Context
 			debounceCtx, cancelUpdate = context.WithCancel(ctx)
 
-			// When joining the cluster, the apiserver adds, removes, and then readds itself to
+			// When joining the cluster, the apiserver adds, removes, and then re-adds itself to
 			// the endpoint list several times.  This causes a bit of thrashing if we react to
 			// endpoint changes immediately.  Instead, perform the endpoint update in a
 			// goroutine that sleeps for a short period before checking for changes and updating