Relates to #7681

In the README and at https://pillow.readthedocs.io/en/latest/, our Tidelift badge currently reads "not lifted!".
The image source is https://tidelift.com/badges/package/pypi/Pillow?style=flat
Changing 'Pillow' to 'pillow', I find that it works again.

Similarly, the 'Sponsor our project' sidebar item at https://github.com/python-pillow/Pillow links to https://tidelift.com/funding/github/pypi/Pillow, but redirects to https://tidelift.com/subscription/how-to-connect-tidelift-with-github.
Changing 'Pillow' to 'pillow', I find that it works again.