Convert all UK spelling to US (#2138)

* all the ise

* forgot a misspelling

* a few more replacements

* bump impl

* rollback and fixes

* bump impl again

* Add aliases for RPC

* Update on_demand.rs

substrate/core/consensus/rhd/src/lib.rs

@@ -66,7 +66,7 @@ pub use rhododendron::{
 };
 pub use self::error::{Error, ErrorKind};
 
-// pub mod misbehaviour_check;
+// pub mod misbehavior_check;
 mod error;
 mod service;