Merge pull request #514 from so2liu/master

fix type for traits.md

en/src/generics-traits/traits.md

@@ -174,7 +174,7 @@ use std::ops;
 // Implement fn multiply to make the code work.
 // As mentioned above, `+` needs `T` to implement `std::ops::Add` Trait.
 // So, what about `*`?  You can find the answer here: https://doc.rust-lang.org/core/ops/
-fn multipl
+fn multiply
 
 fn main() {
     assert_eq!(6, multiply(2u8, 3u8));