Fix broken links

docs/useful-links.md

@@ -23,7 +23,8 @@ JSC offers documentation for the production systems:
 - [JSC Service Status](https://status.jsc.fz-juelich.de/)
 - [JuDoor](https://judoor.fz-juelich.de/login)
 - [Jupyter Lab](https://jupyter-jsc.fz-juelich.de/hub/login?next=%2Fhub%2Fhome)
-- [HDF Cloud](https://hdf-cloud.fz-juelich.de/auth/login/)
+- [JSC Cloud](https://www.fz-juelich.de/en/ias/jsc/systems/scientific-clouds/jsc-cloud)
+- [HDF Cloud](https://www.fz-juelich.de/en/ias/jsc/systems/scientific-clouds/hdf-cloud)
 
 ## Job Reporting
 
@@ -31,9 +32,10 @@ The Job Reporting service gives you access to PDF reports which contain certain
 It also includes an overview over the system utilization and queue.
 You can access the Job Reporting service for the different systems here:
 
-- [JUWELS](https://llview.fz-juelich.de/LLweb/juwels/jobreport/login.php)
-- [JURECA](https://llview.fz-juelich.de/LLweb/jureca/jobreport/login.php)
-- [JUSUF](https://llview.fz-juelich.de/LLweb/jusuf/jobreport/login.php)
+- [JUWELS Cluster](https://llview.fz-juelich.de/juwels/login.php)
+- [JUWELS Booster](https://llview.fz-juelich.de/juwels_booster/login.php)
+- [JURECA](https://llview.fz-juelich.de/jureca/login.php)
+- [JUSUF](https://llview.fz-juelich.de/jusuf/login.php)
 
 ## Apply for Computing Time