Update ethcore/src/engines/validator_set/simple_list.rs

Co-Authored-By: Luke Schoen <ltfschoen@users.noreply.github.com>

ethcore/src/engines/validator_set/simple_list.rs

@@ -38,7 +38,7 @@ impl SimpleList {
 			warn!(target: "engine", "Running AuRa with a single validator implies instant finality. Use a database?");
 		}
 		if validator_count % 2 == 0 {
-			warn!(target: "engine", "Running AuRa with an even number of validators is not recommented (risk of network split).");
+			warn!(target: "engine", "Running AuRa with an even number of validators is not recommended (risk of network split).");
 		}
 		SimpleList { validators }
 	}