Update Enabling Role-Based Access Control Using XACML docs

• In 2nd point it should mention to add role first and then create users in
• It doesn't need point: 4 since IS server is already started
• Add missing click "Add" button to add AdminGrant entitlement rule to the list in 7-a)
• [2] image is not in correct position, it should come before all the images in point: 10 (without this users will try to go with just publish icon above in the page)
• Port in point: 13 should be changed accordingly to the product which made the port offset
  remoteServiceUrl="https://localhost:9444/services"

[1] https://apim.docs.wso2.com/en/latest/learn/api-security/authorization/role-based-access-control-using-xacml/#enabling-role-based-access-control
[2] https://apim.docs.wso2.com/en/3.2.0/assets/attachments/103334839/103334831.png

Open the linked “Enabling Role-Based Access Control Using XACML” documentation page and review points 2, 4, 7-a), 10, and 13 against the reported changes. Update the role/user order, remove point 4, add the missing “Add” action, reorder image [2], and adjust the remoteServiceUrl port; done means the page reflects all five corrections.