improve usage example of tempfile module (#47933)

* Show in example how to use file created by tempfile module

lib/ansible/modules/files/tempfile.py

@@ -55,6 +55,13 @@ EXAMPLES = """
   tempfile:
     state: file
     suffix: temp
+  register: tempfile_1
+
+- name: use the registered var and the file module to remove the temporary file
+  file:
+    path: "{{ tempfile_1.path }}"
+    state: absent
+  when: tempfile_1.path is defined
 """
 
 RETURN = '''