Update bookmarks.md

closes #420

Author: FrancescoXX

docs/key-features/bookmarks.md

@@ -26,6 +26,13 @@ Bookmarks on **daily.dev** allow you to save and organize posts for later readin
 
 These methods ensure a seamless bookmarking experience in daily.dev.
 
+## Bookmark reminder
+
+Once you bookmark a post, you might see it on your feed as a reminder to read it!
+
+![Bookmark reminder image](https://github.com/user-attachments/assets/30f793c0-a1d2-469f-9f5c-f0249c257676)
+
+
 ## Syncing Across Devices
 
 To sync bookmarks, simply log in with the same account on all your devices.