message: Update Example to use shell variable
diff: @@ -116,22 +116,23 @@ Example output
  </summary>
  ```
  -$ curl --insecure https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ API_URL=https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z
  +$ curl --insecure $API_URL/access-keys
  {"users":[]}
  -$ curl --insecure -X POST https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ curl --insecure -X POST $API_URL/access-keys
  {"id":"0","password":"Nm9wtQkPeshs","port":34180}
  -$ curl --insecure -X POST hhttps://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ curl --insecure -X POST $API_URL/access-keys
  {"id":"1","password":"32mW3jhuhBGv","port":55625}
  -$ curl --insecure -X POST https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ curl --insecure -X POST $API_URL/access-keys
  {"id":"2","password":"jFOKrJcpbgIb","port":15884}
  -$ curl --insecure https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ curl --insecure $API_URL/access-keys
  {"users":[{"id":"0","password":"Nm9wtQkPeshs","port":34180},{"id":"1","password":"32mW3jhuhBGv","port":55625},{"id":"2","password":"jFOKrJcpbgIb","port":15884}]}
  -$ curl --insecure -X DELETE https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys/0 -v
  +$ curl --insecure -X DELETE $API_URL/access-keys/0 -v
  * Hostname was NOT found in DNS cache
  * Trying ::1...
  * Connected to 1.2.3.4 (::1) port 1234 (#0)
  @@ -146,7 +147,7 @@ $ curl --insecure -X DELETE https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-k
  <
  * Connection #0 to host 1.2.3.4 left intact
  -$ curl --insecure https://1.2.3.4:1234/3pQ4jf6qSr5WVeMO0XOo4z/access-keys
  +$ curl --insecure $API_URL/access-keys
  {"users":[{"id":"1","password":"32mW3jhuhBGv","port":55625},{"id":"2","password":"jFOKrJcpbgIb","port":15884}]}
  ```
  </details>
  