servo: Merge #5557 - Update CONTRIBUTING.md (from xfq:patch-1); r=metajack

Update the URI of Rust Code of Conduct.

Source-Repo: https://github.com/servo/servo
Source-Revision: f3df8859a83e1e3c61ee1472eb33132f28406a97

servo/CONTRIBUTING.md

@@ -35,7 +35,7 @@ For specific git instructions, see [GitHub & Critic PR handling 101](https://git
 
 ## Conduct
 
-We follow the [Rust Code of Conduct](https://github.com/mozilla/rust/wiki/Note-development-policy#wiki-conduct).
+We follow the [Rust Code of Conduct](http://www.rust-lang.org/conduct.html).
 
 
 ## Communication