update readme

README.md

@@ -42,7 +42,7 @@ ansible-galaxy install -r requirements.yml
 Run ansible playbook: </br>
 ```
 cd ~/kubernetes-infra-example/ansible/01-playbook/
-ansible-playbook -i ~/kubernetes-infra-example/ansible/ansible_inventory --user=ubuntu --become --become-user=root play.yml
+ansible-playbook -i ../ansible_inventory --user=ubuntu --become --become-user=root play.yml
 ```
 
 #### Access via config