DOC: Update two more links in pandas Ecosystem
Update two more links in pandas Ecosystem.

1. In the table schema specification of IO, the dataprotocols.org domain has moved to datapackage.org:
https://datapackage.org/standard/table-schema/ 

2. Removed the ">" at the end of a Lux link to make it work:
https://lux-api.readthedocs.io/en/latest/source/guide/vis.html

- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Thanks @star1327p 