Update blueskyweb.xyz links in README.md to bsky.social (#2168)

README.md

@@ -61,12 +61,12 @@ make help
 
 ## About AT Protocol
 
-The Authenticated Transfer Protocol ("ATP" or "atproto") is a decentralized social media protocol, developed by [Bluesky PBC](https://blueskyweb.xyz). Learn more at:
+The Authenticated Transfer Protocol ("ATP" or "atproto") is a decentralized social media protocol, developed by [Bluesky PBC](https://bsky.social). Learn more at:
 
 - [Overview and Guides](https://atproto.com/guides/overview) 👈 Best starting point
 - [Github Discussions](https://github.com/bluesky-social/atproto/discussions) 👈 Great place to ask questions
 - [Protocol Specifications](https://atproto.com/specs/atp)
-- [Blogpost on self-authenticating data structures](https://blueskyweb.xyz/blog/3-6-2022-a-self-authenticating-social-protocol)
+- [Blogpost on self-authenticating data structures](https://bsky.social/about/blog/3-6-2022-a-self-authenticating-social-protocol)
 
 The Bluesky Social application encompasses a set of schemas and APIs built in the overall AT Protocol framework. The namespace for these "Lexicons" is `app.bsky.*`.