Update README.md

Author: legendarycode3

README.md

@@ -320,7 +320,7 @@ Run tests with different verbosity levels:
 * Chain ID: `31337`
 * VRF Mock: `VRFCoordinatorV2_5Mock`
 * Entrance Fee: `0.001 ETH`
-* Interval:
+* Interval: `30 seconds`
   Default funded accounts available already