fix: Get rid of trailing slash from the server URL

[nifaliana]

Description

Removed the trailing slash from the servers.url field in the OpenAPI specification.
Previously, the base URL ended with /creg/, and the paths started with a /, which resulted in double slashes (//) in the generated URLs.
This change ensures that the final URLs are properly formed without redundant slashes.

Related Issue

N/A – This is a cleanup task to improve URL formatting consistency in the documentation.

Motivation and Context

The OpenAPI documentation currently builds URLs like:
http://ss2.egovstack.net/.../creg//event/new
This is due to a trailing slash in the servers.url and a leading slash in each path.
While it doesn’t always break functionality, it's not a clean or standard-compliant format.
This update improves clarity, avoids potential routing issues, and enhances the overall documentation quality.

How Has This Been Tested?

• Validated in Swagger Editor — no errors or warnings.
• Checked in Swagger UI — all endpoints load correctly.
• Confirmed that URLs are now generated without double slashes.
• Reviewed rendered paths to ensure consistency.