fix fprintf keys

internal/handler/keys.go

@@ -112,7 +112,7 @@ func HandleGenKey(w http.ResponseWriter, r *http.Request) {
 	}
 	key := GenerateKey(name)
 	w.Header().Set("Content-Type", "application/json")
-	fmt.Fprintf(w, "{"key":"%s","name":"%s"}", key, name)
+	fmt.Fprintf(w, "%s", "{"key":""+key+"","name":""+name+""}")
 }
 
 func HandleStats(w http.ResponseWriter, r *http.Request) {