rename to rapier

Author: OTL

index.md

@@ -46,7 +46,7 @@ List of (awesome) Rust libraries for Robotics. If you know something awesome (or
 
 *Physics simulation for robots*
 
-* [nphysics](https://github.com/sebcrozet/nphysics) - 2 and 3-dimensional rigid body physics engine for Rust.
+* [rapier](https://github.com/dimforge/rapier) - 2 and 3-dimensional rigid body physics engine for Rust.
 
 ## Visualization