Add gif to fix-filename response

responses/06_fix-filename.md

@@ -31,6 +31,8 @@ Let's edit this pull request to fix both of these issues.
     {{ expected }}
     ```
 1. Scroll to the bottom and enter a commit message and commit in the **Commit Changes** section.
+
+![gif of changing file name in UI](https://user-images.githubusercontent.com/9906718/112817649-f4ac1a80-9082-11eb-972f-4a6609857b20.gif)
 {% endif %}
 
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