removed dead links in badges

README.md

@@ -6,14 +6,11 @@
 | :-- | :--  |
 | (1/5) code repository              | [![github repo badge](https://img.shields.io/badge/github-repo-000.svg?logo=github&labelColor=gray&color=blue)](https://github.com/RECETOX/rcx-tk) |
 | (2/5) license                      | [![github license badge](https://img.shields.io/github/license/RECETOX/rcx-tk)](https://github.com/RECETOX/rcx-tk) |
-| (3/5) community registry           | [![RSD](https://img.shields.io/badge/rsd-rcx_tk-00a3e3.svg)](https://www.research-software.nl/software/rcx_tk) [![workflow pypi badge](https://img.shields.io/pypi/v/rcx_tk.svg?colorB=blue)](https://pypi.python.org/project/rcx_tk/) |
-| (4/5) citation                     | [![DOI](https://zenodo.org/badge/DOI/<replace-with-created-DOI>.svg)](https://doi.org/<replace-with-created-DOI>) |
 | (5/5) checklist                    | [![workflow cii badge](https://bestpractices.coreinfrastructure.org/projects/<replace-with-created-project-identifier>/badge)](https://bestpractices.coreinfrastructure.org/projects/<replace-with-created-project-identifier>) |
 | howfairis                          | [![fair-software badge](https://img.shields.io/badge/fair--software.eu-%E2%97%8F%20%20%E2%97%8F%20%20%E2%97%8F%20%20%E2%97%8F%20%20%E2%97%8B-yellow)](https://fair-software.eu) |
 | **Other best practices**           | &nbsp; |
 | Static analysis                    | [![workflow scq badge](https://sonarcloud.io/api/project_badges/measure?project=RECETOX_rcx-tk&metric=alert_status)](https://sonarcloud.io/dashboard?id=RECETOX_rcx-tk) |
 | Coverage                           | [![workflow scc badge](https://sonarcloud.io/api/project_badges/measure?project=RECETOX_rcx-tk&metric=coverage)](https://sonarcloud.io/dashboard?id=RECETOX_rcx-tk) |
-| Documentation                      | [![Documentation Status](https://readthedocs.org/projects/rcx-tk/badge/?version=latest)](https://rcx-tk.readthedocs.io/en/latest/?badge=latest) |
 | **GitHub Actions**                 | &nbsp; |
 | Build                              | [![build](https://github.com/RECETOX/rcx-tk/actions/workflows/build.yml/badge.svg)](https://github.com/RECETOX/rcx-tk/actions/workflows/build.yml) |
 | Citation data consistency          | [![cffconvert](https://github.com/RECETOX/rcx-tk/actions/workflows/cffconvert.yml/badge.svg)](https://github.com/RECETOX/rcx-tk/actions/workflows/cffconvert.yml) |