Update ADOPTERS.md
Add manager.cl to the list of adopters.
- [LeadIQ](https://leadiq.com)
- [Lendico](https://www.lendico.de/)
- [M1 Finance](https://www.m1finance.com/)
+- [manager.cl](https://www.manager.cl/)
- [MattePaint](https://www.mattepaint.com/)
- [Mentum](https://mentumqr.com/)
- [MercedesBenz.io](https://www.mercedes-benz.io/)
