Rename all j2 files to templates

Not according to convention, but it reads better.

playbook-caddyproxy.yml

@@ -73,7 +73,7 @@
 
     - name: "Copy caddy file"
       ansible.builtin.template:
-        src: "./files/{{ app_name }}/Caddyfile.j2"
+        src: "./files/{{ app_name }}/Caddyfile.template"
         dest: "{{ (caddy_file_dir, 'Caddyfile') | path_join }}"
         owner: "{{ app_user }}"
         group: "{{ app_user }}"
@@ -81,7 +81,7 @@
 
     - name: "Copy docker compose file"
       ansible.builtin.template:
-        src: "./files/{{ app_name }}/docker-compose.yml.j2"
+        src: "./files/{{ app_name }}/docker-compose.template.yml"
         dest: "{{ base_dir }}/docker-compose.yml"
         owner: "{{ app_user }}"
         group: "{{ app_user }}"