Increase force layout charge a bit

Author: linkvt

src/webvowl/js/options.js

@@ -8,7 +8,7 @@ module.exports = function () {
 		classDistance = 200,
 		datatypeDistance = 120,
 		loopDistance = 100,
-		charge = -300,
+		charge = -500,
 		gravity = 0.025,
 		linkStrength = 1,
 		height = 600,