Update PSF_LICENSE
Corrections on some misspelled words on the PSF_LICENSE.

- [ ] 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 an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Spellings are updated on the PSF_LICENSE. @chineduG do you have time to address the comments? If you check the diff, you will quickly see that the format of your changes is not correct. It's fine to update the text, but the format should be the same, not all these blank lines that make really hard to read the document. This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Closing as stale. @chineduG if you still want to address the comments and continue working on this please let us know to reopen.