use "one-liner" syntax

roles/install_arch/tasks/main.yml

@@ -151,12 +151,7 @@
   changed_when: "chroot_grub_mkconfig.rc == 0"
 
 - name: setup pacman-init.service on first boot
-  template:
-    src: pacman-init.service
-    dest: /etc/systemd/system/pacman-init.service
-    owner: root
-    group: root
-    mode: 0644
+  template: src=pacman-init.service dest=/etc/systemd/system/pacman-init.service owner=root group=root mode=0644
 
 - name: enable services inside chroot
   command: chroot /mnt systemctl enable sshd systemd-networkd systemd-resolved fstrim.timer pacman-init