typo

README.md

@@ -18,7 +18,7 @@ fn main() {
     db.put(b"my key", b"my value");
     db.get(b"my key")
         .map( |value| { 
-            println!("retrieved value {}", value.to_utf8().unwrap()),
+            println!("retrieved value {}", value.to_utf8().unwrap())
         })
         .on_absent( || { println!("value not found") })
         .on_error( |e| { println!("operational problem encountered: {}", e) });