Fix a typo.

tasks/additional_disks.yml

@@ -24,7 +24,7 @@
 - block:
     - name: Create a file system on the new disks
       ansible.builtin.filesystem:
-        dev: '{{ item.root_device | default('/dev/') }}{{ item.device }}'
+        dev: "{{ item.root_device | default('/dev/') }}{{ item.device }}"
         fstype: '{{ item.fstype }}'
         force: false
       loop: '{{ disks_and_mountpoints_list }}'
@@ -36,7 +36,7 @@
     - name: Manage the additional file systems
       ansible.posix.mount:
         name: '{{ item.mountpoint }}'
-        src: '{{ item.root_device | default('/dev/') }}{{ item.device }}'
+        src: "{{ item.root_device | default('/dev/') }}{{ item.device }}"
         fstype: '{{ item.fstype }}'
         opts: '{{ item.opts }}'
         state: '{{ item.state }}'