Describe the bug
The check to see whether a DOI is in wikidata needs to have the same domain as the code to generate the item.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://scholia.toolforge.org/doi/https://doi.org/10.3390/MICROORGANISMS12071299
2. Create the item
3. Notice that the DOI already exists
4. See error

Expected behavior
https://scholia.toolforge.org/doi/https://doi.org/10.3390/MICROORGANISMS12071299

Should redirect to

https://scholia.toolforge.org/doi/10.3390/MICROORGANISMS12071299

Or at least have the same behaviour