Fix #878 : prevent trailing slashes on absolute Wikipedia URLs

[reshma045]

Summary: This PR fixes the issue where absolute Wikipedia URLs in the generated reference docs had unwanted trailing slashes.

Closes #878

What was done:

1. Modified src/scripts/builders/reference.ts to add a check preventing trailing slashes on absolute URLs (URLs starting with http)
2. Ran npm run build:reference to regenerate the reference documentation files
3. Verified that Wikipedia links no longer contain trailing slashes and work correctly
4. Verified that no changes were made to package-lock.json

Thanks to the maintainers for the guidance!