Add software publications and contributions

@jandt-desy I added both software publications, which I'm aware of, as well as contributions to Open Source software in general.

• Direct link: https://hifis-review-app.hzdr.de/review-apps/hifis-hifis-net/software-publications/mission/publications#software-publications

Coud you please check.

mission/publications.md

@@ -13,6 +13,7 @@ excerpt:
     * Helmholtz AAI [**Policies**](https://hifis.net/policies).
     * [**List of Helmholtz centres**](https://hifis.net/doc/backbone-aai/list-of-connected-centers/) that are technically connected to the Helmholtz AAI.
 * All [**HIFIS Documentation**](https://www.hifis.net/doc/) for architectural components and processes.
+* The original platform proposal for HIFIS [can be found here](https://www.helmholtz.de/fileadmin/user_upload/01_forschung/Helmholtz_Inkubator_HIFIS.pdf).
 
 
 #### Abstracts, Presentations, News
@@ -61,13 +62,13 @@ excerpt:
 * [Continuous Documentation for Users, Developers and Maintainers](https://zenodo.org/record/3247324)
 * [Share and synchronize your data with HZB Cloud Nubes safely](https://www.helmholtz-berlin.de/zentrum/locations/it/datenablage/persoenliche/nextcloud/index_en.html)
 
-#### Software Publications
+# Software Publications
 
 HIFIS creates its own software packages, but also contributes to Open Source software in general.
 
-#### 2020
+#### Software Packages
 
-##### Software Packages
+##### 2020
 
 * [Ansible GitLab Role](https://gitlab.com/hifis/ansible/gitlab-role) - Ansible role to install and configure the GitLab Omnibus package, also in a high availability context.
 * [Ansible Keepalived Role](https://gitlab.com/hifis/ansible/keepalived-role) - Ansible role that sets up Keepalived for high availabilty.
@@ -76,7 +77,9 @@ HIFIS creates its own software packages, but also contributes to Open Source sof
 * [Ansible SSH keys role](https://gitlab.com/hifis/ansible/ssh-keys) - Ansible role to distribute authorized SSH public keys to users.
 * [GitLab-Runner for Power](https://gitlab.com/hzdr/gitlab-runner/-/releases) - GitLab-Runner packages for the `ppc64le` architecture.
 
-##### Contributions
+#### Contributions
+
+##### 2020
 
 * [**Python Poetry**](https://python-poetry.org/) - [Respect REUSE spec when including licenses](https://github.com/python-poetry/poetry-core/pull/57)
 * [**Ansible (community.crypto)**](https://github.com/ansible-collections/community.crypto) - [openssl_pkcs12 parse action: always changed in check mode](https://github.com/ansible-collections/community.crypto/issues/143)
@@ -84,10 +87,8 @@ HIFIS creates its own software packages, but also contributes to Open Source sof
   * [Use package state 'present' since 'installed' is deprecated](https://github.com/dev-sec/ansible-collection-hardening/pull/168)
   * [Add variable to specify SSH host RSA key size](https://github.com/dev-sec/ansible-collection-hardening/pull/394)
 
-#### HIFIS Proposal
-* The original platform proposal for HIFIS [can be found here](https://www.helmholtz.de/fileadmin/user_upload/01_forschung/Helmholtz_Inkubator_HIFIS.pdf).
 
-#### Repositories for Documentation
+# Repositories for Documentation
 The following documentation projects are publicly accessible for reading. You can contribute to them after signing in via Helmholtz AAI.
 * [Gitlab Project for this homepage](https://gitlab.hzdr.de/hifis/hifis.net)
 * [Gitlab Project for HIFIS Documentation](https://gitlab.hzdr.de/hifis/hifis-technical-documentation)