Update docs/installation/docker/site-template/docker-modifications.md

Co-authored-by: Adam <[email protected]>

docs/installation/docker/site-template/docker-modifications.md

@@ -62,7 +62,7 @@ By default, your Fedora repo will be available to the public at `fcrepo.${DOMAIN
 
 If you have done this, you can also remove the DNS records that point this URL to your prodcution server.
 
-Finally, you will have to change the URL that Drupal uses to access the Fedora repo. This can be found in your `docker-compose.ym'` in the `environment` section for `drupal-prod`, and should be changed to:
+Finally, you will have to change the URL that Drupal uses to access the Fedora repo. This can be found in your `docker-compose.yml'` in the `environment` section for `drupal-prod`, and should be changed to:
 
 ```
 DRUPAL_DEFAULT_FCREPO_URL: "http://fcrepo:8080/fcrepo/rest/"