Fix broken address in Helm repository

docs/index.yaml

 apiVersion: v1
 entries:
   theodolite:
-  - apiVersion: v2
-    appVersion: 0.7.0
-    created: "2022-05-11T13:49:02.457130925+02:00"
-    dependencies:
-    - condition: grafana.enabled
-      name: grafana
-      repository: https://grafana.github.io/helm-charts
-      version: 6.17.5
-    - condition: kube-prometheus-stack.enabled
-      name: kube-prometheus-stack
-      repository: https://prometheus-community.github.io/helm-charts
-      version: 20.0.1
-    - condition: cp-helm-charts.enabled
-      name: cp-helm-charts
-      repository: https://soerenhenning.github.io/cp-helm-charts
-      version: 0.6.0
-    - condition: strimzi.enabled
-      name: strimzi-kafka-operator
-      repository: https://strimzi.io/charts/
-      version: 0.28.0
-    description: Theodolite is a framework for benchmarking the horizontal and vertical
-      scalability of cloud-native applications.
-    digest: af10134baa30bb07423f78240fe1c609381e1c616585883cf5d3aded2d86a2b1
-    home: https://www.theodolite.rocks
-    maintainers:
-    - email: soeren.henning@email.uni-kiel.de
-      name: Sören Henning
-      url: https://www.se.informatik.uni-kiel.de/en/team/soeren-henning-m-sc
-    name: theodolite
-    sources:
-    - https://github.com/cau-se/theodolite
-    type: application
-    urls:
-    - https://github.com/cau-se/theodolite/releases/download/v0.7.0/theodolite-0.7.0%20copy.tgz
-    version: 0.7.0
   - apiVersion: v2
     appVersion: 0.7.0
     created: "2022-05-11T13:49:02.491041789+02:00"