✏ Update guestbook

Author: actions-user

guestbook.md

@@ -3,5 +3,7 @@
 This guestbook is populated by approved :+1: comments in https://github.com/joshmgross/guestbook/issues/1.
 
 <!--START:guestbook-->
-
+[@joshmgross](https://github.com/joshmgross) said:
+> Hello, this is an informative and useful comment illustrating my thoughts. 🧀
+<sup>[src](https://github.com/joshmgross/guestbook/issues/1#issuecomment-645117859)</sup>
 <!--END:guestbook-->