Update index.md

Fixed invalid bluesky link for react.dev

Author: JosefHartsough

src/content/blog/index.md

@@ -6,7 +6,7 @@ title: React Blog
 
 This blog is the official source for the updates from the React team. Anything important, including release notes or deprecation notices, will be posted here first. 
 
-You can also follow the [@react.dev](https://bsky.app/profiles/react.dev) account on Bluesky, or [@reactjs](https://twitter.com/reactjs) account on Twitter, but you won’t miss anything essential if you only read this blog.
+You can also follow the [@react.dev](https://bsky.app/profile/react.dev) account on Bluesky, or [@reactjs](https://twitter.com/reactjs) account on Twitter, but you won’t miss anything essential if you only read this blog.
 
 </Intro>