Update web/web.go

Co-authored-by: Julien <291750+roidelapluie@users.noreply.github.com>
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

web/web.go

@@ -481,7 +481,7 @@ func New(logger log.Logger, o *Options) *Handler {
 
 	router.Get("/-/healthy", func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
-		fmt.Fprint(w, o.AppName+" is Healthy.\n")
+		fmt.Fprintf(w, "%s is Healthy.\n", o.AppName)
 	})
 	router.Head("/-/healthy", func(w http.ResponseWriter, _ *http.Request) {
 		w.WriteHeader(http.StatusOK)