Fixing the server URL path for OpenAPI scanning

[trypa11]

Proposed changes

Issue #5503

I discovered in the debug mode of VS Code that a command in the generator.go file of nuclei incorrectly changes the path, resulting in wrong HTTP requests.

Before the command in line 254 :

After the command in line 254:

Result after the solution:

Checklist

• [x ] Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[trypa11]

I have resolved the unit test error by finding an alternative method to avoid deleting command 254, as this command is essential for testing. To achieve this, I separated the host and path parts of the server URL and added the server path to the request path.
Additionally, I corrected the swagger file test because it was testing the wrong endpoints.

As you can see, the swagger file has an extra /v1 path in every endpoint that is not included in the swagger file's endpoints.

[dwisiswant0]

LGTM.