docs: update links to old docs

README.md

@@ -6,6 +6,6 @@
 
 * [Documentation](https://docs.postalserver.io)
 * [Installation Instructions](https://docs.postalserver.io/install/prerequisites)
-* [FAQs](https://github.com/atech/postal/wiki/FAQs) & [Features](https://github.com/atech/postal/wiki/Features)
+* [FAQs](https://docs.postalserver.io/welcome/faqs) & [Features](https://docs.postalserver.io/welcome/feature-list)
 * [Ask for help](https://github.com/postalserver/postal/discussions)
 * [Slack Channel](https://slack.k.io)