roles: don't compare literal true and false

I changed these yesterday when editing the truthy values, but acco-
rding to ansible-link we can just rely on them being true or false
without comparing.

roles/nginx/tasks/wordpress.yml

@@ -5,14 +5,14 @@
     ansible.builtin.git: repo=https://github.com/WordPress/WordPress.git dest={{ nginx_root_prefix }}/{{ item.domain_name }}/wordpress version={{ item.wordpress_version }} depth=1 force=true
     when:
       - item.has_wordpress is defined
-      - item.has_wordpress == true
+      - item.has_wordpress
     loop: "{{ nginx_vhosts }}"
 
   - name: Fix WordPress directory permissions
     ansible.builtin.file: path={{ nginx_root_prefix }}/{{ item.domain_name }} state=directory owner=nginx group=nginx recurse=true
     when:
       - item.has_wordpress is defined
-      - item.has_wordpress == true
+      - item.has_wordpress
     loop: "{{ nginx_vhosts }}"
   tags: wordpress