Update URLs for PIKA user webinterface

doc.zih.tu-dresden.de/docs/software/pika.md

@@ -2,12 +2,12 @@
 
 PIKA is a hardware performance monitoring stack to identify inefficient HPC jobs. Users of ZIH
 systems have the possibility to visualize and analyze the efficiency of their jobs via the
-[PIKA web interface](https://selfservice.zih.tu-dresden.de/l/index.php/hpcportal/jobmonitoring/zih/jobs).
+[PIKA web interface](https://pika.zih.tu-dresden.de).
 
 !!! hint
 
     To understand this guide, it is recommended that you open the
-    [web interface](https://selfservice.zih.tu-dresden.de/l/index.php/hpcportal/jobmonitoring/zih/jobs)
+    [web interface](https://pika.zih.tu-dresden.de)
     in a separate window. Furthermore, you should have submitted at least one real HPC job at ZIH
     systems.
 
@@ -15,7 +15,7 @@ systems have the possibility to visualize and analyze the efficiency of their jo
 
 PIKA consists of several components and tools. It uses the collection daemon collectd, InfluxDB to
 store time-series data and MariaDB to store job metadata. Furthermore, it provides a powerful
-[web interface](https://selfservice.zih.tu-dresden.de/l/index.php/hpcportal/jobmonitoring/zih/jobs)
+[web interface](https://pika.zih.tu-dresden.de)
 for the visualization and analysis of job performance data.
 
 ## Table View and Job Search