Clean-up fosite-example/main.go link in README.md
Clean-up fosite-example/main.go link in README.md

The README url to the suggested example was broken.
leetal/fosite,ory/fosite,janekolszak/fosite,janekolszak/fosite,leetal/fosite,ory-am/fosite,spotxchange/fosite,ory/fosite,spotxchange/fosite,ory-am/fosite