Set absolute URLs prior to uploading to PyPI (#5038)

## Summary

Closes https://github.com/astral-sh/uv/issues/5030.

scripts/check_embedded_python.py

@@ -9,7 +9,6 @@ import subprocess
 import sys
 import tempfile
 
-
 if __name__ == "__main__":
     logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s")