fix redirect bug

docs/_config.yml

@@ -1,7 +1,7 @@
 title: Expensify Help
 tagline: Expensify Help - all your Expensify questions answered in one place.
 description: Got a question about receipts, expenses, corporate cards, or anything else in the spend management universe? Get answers at help.expensify.com.
-url: help.expensify.com
+url: https://help.expensify.com
 author: Expensify
 logo: /assets/images/expensify-help.svg
 open_url: true