cmd/tailscale/cli: fix the spelling of "routes" (#17039)

Updates #cleanup

Signed-off-by: Alex Chan <alexc@tailscale.com>

cmd/tailscale/cli/set.go

@@ -185,7 +185,7 @@ func runSet(ctx context.Context, args []string) (retErr error) {
 		}
 	}
 
-	warnOnAdvertiseRouts(ctx, &maskedPrefs.Prefs)
+	warnOnAdvertiseRoutes(ctx, &maskedPrefs.Prefs)
 	if err := checkExitNodeRisk(ctx, &maskedPrefs.Prefs, setArgs.acceptedRisks); err != nil {
 		return err
 	}

cmd/tailscale/cli/up.go

@@ -486,7 +486,7 @@ func runUp(ctx context.Context, cmd string, args []string, upArgs upArgsT) (retE
 		fatalf("%s", err)
 	}
 
-	warnOnAdvertiseRouts(ctx, prefs)
+	warnOnAdvertiseRoutes(ctx, prefs)
 	if err := checkExitNodeRisk(ctx, prefs, upArgs.acceptedRisks); err != nil {
 		return err
 	}
@@ -1184,7 +1184,7 @@ func resolveAuthKey(ctx context.Context, v, tags string) (string, error) {
 	return authkey, nil
 }
 
-func warnOnAdvertiseRouts(ctx context.Context, prefs *ipn.Prefs) {
+func warnOnAdvertiseRoutes(ctx context.Context, prefs *ipn.Prefs) {
 	if len(prefs.AdvertiseRoutes) > 0 || prefs.AppConnector.Advertise {
 		// TODO(jwhited): compress CheckIPForwarding and CheckUDPGROForwarding
 		//  into a single HTTP req.