docs: update some changes in 1.39.0

Author: lukicenturi

.vitepress/config.mts

@@ -68,6 +68,7 @@ export default defineConfig({
           { text: 'Taking Notes In-App', link: '/usage-guides/user-notes' },
           { text: 'Address Book', link: '/usage-guides/address-book' },
           { text: 'Calendar', link: '/usage-guides/calendar' },
+          { text: 'On-Chain Transactions', link: '/usage-guides/onchain' },
         ],
       },
       {