Fix links

doc.zih.tu-dresden.de/docs/application/project_request_form.md

@@ -70,7 +70,7 @@ At ZIH, TU Dresden for applying for HPC resources on NHR:
         * Further information can be found in [https://tu-dresden.de/zih/hochleistungsrechnen/nhr-center](https://tu-dresden.de/zih/hochleistungsrechnen/nhr-center).
         If your research topic fits the above focus topics, the application kind 'NHR' is recommended.
     * for all research projects not related to our focus topics but from universities in Saxony
-    * for other focuses other NHR centers are available [https://www.nhr-gs.de/ueber-uns/nhr-verein](https://www.nhr-gs.de/ueber-uns/nhr-verein)
+    * for other focuses other NHR centers are available [https://www.nhr-verein.de/unsere-mitglieder](https://www.nhr-verein.de/unsere-mitglieder)
 
     Application Login:
 

doc.zih.tu-dresden.de/docs/contrib/contribute_browser.md

@@ -28,7 +28,7 @@ Once you are granted the developer role, choose "ZIH/hpcsupport/hpc-compendium"
 !!! hint "Git basics"
 
     If you are not familiar with the basics of git-based document revision control yet, please have
-    a look at [Gitlab tutorials](https://gitlab.hrz.tu-chemnitz.de/help/gitlab-basics/index.md).
+    a look at [Gitlab tutorials](https://docs.gitlab.com/ee/tutorials/).
 
 ## Create a Branch
 

doc.zih.tu-dresden.de/docs/data_lifecycle/longterm_preservation.md

@@ -43,7 +43,7 @@ Meta-data means data about data. Meta-data are information about the stored file
 administrative meta-data, descriptive meta-data, technical meta-data and so on. Often meta-data are
 stored in XML-format but free text is also possible. There are some meta-data standards like
 [Dublin Core](http://dublincore.org/) or
-[LMER](https://www.dnb.de/DE/Professionell/Standardisierung/Standards/_content/lmer_uof_akk.html)
+[LMER](https://www.dnb.de/DE/Professionell/Standardisierung/Standards/_content/lmer_uof.html)
 Below are some examples:
 
 - possible meta-data for a book would be:

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

@@ -288,7 +288,7 @@ marie@login$ sbatch mapdl_job.sh
 
 ## COMSOL Multiphysics
 
-[COMSOL Multiphysics](http://www.comsol.com) (formerly FEMLAB) is a finite element analysis, solver
+[COMSOL Multiphysics](https://www.comsol.com) (formerly FEMLAB) is a finite element analysis, solver
 and Simulation software package for various physics and engineering applications, especially coupled
 phenomena, or multiphysics.