style: add YAML document start markers to Ansible playbooks and tasks

config/ansible/tasks/workstations/vscode.yml

@@ -1,3 +1,4 @@
+---
 - name: Gather OS facts
   ansible.builtin.setup:
     filter: ansible_distribution
@@ -18,12 +19,12 @@
       gpgcheck=1
       gpgkey=https://packages.microsoft.com/keys/microsoft.asc
     dest: /etc/yum.repos.d/vscode.repo
-    mode: '0644'
+    mode: "0644"
   when: os_facts.ansible_facts.ansible_distribution == 'Fedora'
 
 - name: Add VSCode repository (Ubuntu/Debian)
   ansible.builtin.apt_repository:
-    repo: 'deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main'
+    repo: "deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main"
     state: present
   when: os_facts.ansible_facts.ansible_distribution in ['Ubuntu', 'Debian']