Remove accidentally remaining argument

public/main.js

@@ -69,7 +69,7 @@
 		return this.dot(this);
 	};
 	Vector.prototype.norm = function() {
-		return Math.sqrt(this.normSquared(this));
+		return Math.sqrt(this.normSquared());
 	};
 	Vector.prototype.distance_squared = function(other) {
 		var diffX = this.x - other.x;