There is inconsistency in the usage of the '?free-trial' parameter in the login URLs within the documentation.

As noted in PR #159 (#159) and the associated comment (#159 (comment)), the '?free-trial' parameter is present in some login URLs but missing in others.

It would be helpful to standardize the usage of the '?free-trial' parameter across all documentation, based on its intended purpose.

Requester: @aravindputrevu