Annotation for clojure.core.interleave is wrong.

Annotation for interleave accepts only one arg, but interleave actual needs two or more.
https://github.com/clojure/core.typed/blob/master/src/main/clojure/clojure/core/typed/base_env.clj#L984
maybe something like: (All [x] [(Option (Seqable x)) (Option (Seqable x)) * -> (Seq x)]) (thanks to nathanic @ irc)