docs(authorized_key): add lookup.url example

changelogs/fragments/255_authorized_key_url.yml

@@ -0,0 +1,3 @@
+---
+trivial:
+- authorized_keys - add example involving lookup.url

plugins/modules/authorized_key.py

@@ -94,6 +94,12 @@ EXAMPLES = r'''
     state: present
     key: https://github.com/charlie.keys
 
+- name: Set authorized keys taken from url using lookup
+  ansible.posix.authorized_key:
+    user: charlie
+    state: present
+    key: "{{ lookup('url', 'https://github.com/charlie.keys', split_lines=False) }}"
+
 - name: Set authorized key in alternate location
   ansible.posix.authorized_key:
     user: charlie