docs(ec2): wrong description for InterfaceVpcEndpoint (#28632)

Change the documentation as it showing wrong description.

InterfaceVpcEndpoint class does have a open property that is default true which states traffic is automatically allowed from the VPC CIDR.

Closes #28350.

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packages/aws-cdk-lib/aws-ec2/README.md

@@ -959,10 +959,9 @@ new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
 
 #### Security groups for interface VPC endpoints
 
-By default, interface VPC endpoints create a new security group and traffic is **not**
-automatically allowed from the VPC CIDR.
+By default, interface VPC endpoints create a new security group and all traffic to the endpoint from within the VPC will be automatically allowed.
 
-Use the `connections` object to allow traffic to flow to the endpoint:
+Use the `connections` object to allow other traffic to flow to the endpoint:
 
 ```ts
 declare const myEndpoint: ec2.InterfaceVpcEndpoint;