Open Collective link is broken

The open collective link referenced in the, 
- [README](https://github.com/ctrlplusb/react-sizeme/blob/master/README.md)
- [FUNDING](https://github.com/ctrlplusb/react-sizeme/blob/master/.github/FUNDING.yml)

Is broken and that following accounts doesn't exist.
[opencollective](https://opencollective.com/controlplusb)