Better type hint position

[vemv]

clostache/src/clostache/parser.clj

Line 10 in f6ad1f4

(defn- ^String map-str

places the type hint on the symbol, while for a number the years the recommended way is to place it on the argv.

https://clojure.org/reference/java_interop#typehints (last paragraph)

https://gist.github.com/pjstadig/6fa4ebf465f6d438b4dcc2a5bfbb3db6