update link to custom webhook

README.md

@@ -153,7 +153,7 @@ You also need to enable the `coop-timing` runner for your project. Again this
 needs to be done by an admit.
 
 Behind the scenes, the data is sent to our
-[custom webhook](https://gitlab.mpi-sws.org/janno/gitlab-ci-webhook), which runs
+[custom webhook](https://gitlab.mpi-sws.org/iris/ci-timing-webhook), which runs
 on `coq-speed.mpi-sws.org` and locally stores the data in a PostgreSQL database.
 
 [coq-speed]: https://coq-speed.mpi-sws.org/