Removed multiple consecutive blank lines

doc.zih.tu-dresden.de/docs/index.md

@@ -42,4 +42,3 @@ and [GitLab Pages](https://docs.gitlab.com/ee/user/project/pages/).
 Using GitLab Pages static websites can be directly published from a repository in GitLab. GitLab
 Runner is an application that works with GitLab CI/CD to run jobs in a pipeline. The CI/CD pipeline
 for this very project is to generate the static html using `mkdocs` and deploy them at GitLab Pages.
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