fix: update traefik.containo.us to traefik.io

Updated references to Traefik’s official domain from traefik.containo.us to traefik.io to align with the latest documentation and official website.

Signed-off-by: Ashton Pillay
<[email protected]>
Signed-off-by: Ashton Pillay <[email protected]>

Author: Der-Exam

charts/flagger/templates/rbac.yaml

@@ -197,7 +197,7 @@ rules:
       - patch
       - delete
   - apiGroups:
-    - traefik.io
+    - traefik.io 
     resources:
     - traefikservices
     verbs: