Update README.md (#4926)

Author: Lubov66

README.md

@@ -15,7 +15,7 @@
     <a href="https://discord.snapshot.org/">
         <img src="https://img.shields.io/discord/707079246388133940.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" alt="Discord">
     </a>
-    <a href="https://twitter.com/SnapshotLabs">
+    <a href="https://x.com/SnapshotLabs">
         <img src="https://img.shields.io/twitter/follow/SnapshotLabs?label=SnapshotLabs&style=social">
     </a>
 </div>
@@ -27,7 +27,7 @@
     •
     <a href="https://features.snapshot.org/feature-requests"><b>Feature requests</b></a>
     •
-    <a href="https://docs.snapshot.org/guides/contribute"><b>Contribute</b></a>
+    <a href="https://docs.snapshot.org/introduction#contributing"><b>Contribute</b></a>
 </div>
 
 ## Project setup