ottyl/tickets/021-remove-alert-delivery-hint-text.md

Remove the "Every alert rule delivers here" hint text

From WISHLIST.md: delete the line "Every alert rule delivers here — see the Alerts panel to define rules." from the Ntfy sink settings section.

Acceptance criteria

• The <p> containing "Every alert rule delivers here — see the Alerts panel to define rules." is removed from the Ntfy sink section in NavMenu.tsx (around line 387).
• No other content in that section changes.