update kustomize

tutor/templates/kustomization.yml

@@ -38,7 +38,8 @@ configMapGenerator:
 - name: mysql-config
   env: apps/mysql/auth.env
 - name: mysql-cnf
-  files: apps/mysql/my.cnf
+  files: 
+  - apps/mysql/my.cnf
 {{ patch("kustomization-configmapgenerator") }}
 
 {{ patch("kustomization") }}