refactor: yml -> yaml

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

roles/k3s_storage/tasks/main.yaml

@@ -0,0 +1,5 @@
+---
+- name: Install dependencies
+  ansible.builtin.include_tasks: requirements.yaml
+- name: Install k3s
+  ansible.builtin.include_tasks: installation.yaml

roles/k3s_storage/tasks/main.yml

@@ -1,5 +0,0 @@
----
-- name: Install dependencies
-  ansible.builtin.include_tasks: requirements.yml
-- name: Install k3s
-  ansible.builtin.include_tasks: installation.yml