docs: add lucide icons guide to syncing

docs/guide/syncing.md

@@ -16,6 +16,12 @@ should look like this:
 
 ![syncing-icon-packs](../assets/syncing-icon-packs.png)
 
+## Lucide Icons
+
+Obsidian supports Lucide icons by default.
+This native integration brings several advantages, such as there is no additional download required and sync seamlessly across all your devices.
+That's why I highly advise, if you are experiencing syncing issues, exclusively use the Lucide icons for now, which are installed by default, and remove all other icon packs from your Obsidian vault.
+
 ## Background Checker
 
 ::: tip NOTE