markdown docs: fix dead links (#11878)

* DOCKER.md: fix dead links

* CONTRIBUTING.md: fix dead links

* RELEASING.md: Fix broken links

* README.md: update link to feature freeze latest news

* Update readme-docs/DOCKER.md

Co-authored-by: Harold Blankenship <36673698+hblankenship@users.noreply.github.com>

---------

Co-authored-by: Harold Blankenship <36673698+hblankenship@users.noreply.github.com>

Author: valentijnscholten

README.md

@@ -109,7 +109,7 @@ our channel there, [#defectdojo](https://owasp.slack.com/channels/defectdojo). F
 
 :warning: We have instituted a [feature freeze](https://github.com/DefectDojo/django-DefectDojo/discussions/8002) on v2
 of DefectDojo as we begin work on v3. Please see our [contributing guidelines](readme-docs/CONTRIBUTING.md) for more
-information. Check out our latest update on v3 [here](https://github.com/DefectDojo/django-DefectDojo/discussions/8974).
+information. Check out our latest update on v3 [here](https://github.com/DefectDojo/django-DefectDojo/discussions/11199).
 
 ## Pro Edition
 [Upgrade to DefectDojo Pro](https://www.defectdojo.com/) today to take your DevSecOps to 11. DefectDojo Pro is

readme-docs/CONTRIBUTING.md

@@ -31,7 +31,7 @@ for approval, please file an issue to get pre-approval before beginning work on
 `enhancement-approved` label to your issue and you can begin building it out.
 
 Below are some representative examples of what we will and won't support going forward. If you have suggestions or other
-feedback, please let us know in the `#defectdojo` channel in [OWASP's Slack](https://owasp-slack.herokuapp.com/).
+feedback, please let us know in the `#defectdojo` channel in [OWASP's Slack](https://owasp.org/slack/invite).
 
 **Acceptable examples:**
 
@@ -54,7 +54,7 @@ feedback, please let us know in the `#defectdojo` channel in [OWASP's Slack](htt
 
 ## Writing a New Parser
 
-Please see [the parser guide](https://documentation.defectdojo.com/en/open_source/contributing/how-to-write-a-parser/) for guidance on how to write a parser.
+Please see [the parser guide](https://docs.defectdojo.com/en/open_source/contributing/how-to-write-a-parser/) for guidance on how to write a parser.
 
 ## Modifying DefectDojo and Testing
 
@@ -102,4 +102,4 @@ During the review process, one or more reviewers may provide feedback on your ch
 Requested changes from reviewers should stay within the scope of the PR.
 Please do not resolve comments without any discussion. If you decide not to make a suggested change,
 make sure to leave a brief reply as a response so that everyone
-is on the same page. The reviewer can then resolve the comment if the reasoning is acceptable.
+is on the same page. The reviewer can then resolve the comment if the reasoning is acceptable.

readme-docs/DOCKER.md

@@ -2,7 +2,11 @@
 
 The docker-compose.yml file in this repository is fully functional to evaluate DefectDojo in your local environment.
 
-Although Docker Compose is one of the supported installation methods to deploy a containerized DefectDojo in a production environment, the docker-compose.yml file is not intended for production use without first customizing it to your particular situation. [Running in Production](https://documentation.defectdojo.com/getting_started/running-in-production/) gives advice on which adjustments are useful for performance and operational reliability.
+Although Docker Compose is one of the supported installation methods to deploy a containerized DefectDojo in a production environment, the docker-compose.yml file is not intended for production use without first customizing it to your particular situation. 
+
+[Running in Production](https://docs.defectdojo.com/en/open_source/installation/running-in-production/) gives advice on which adjustments are useful for performance and operational reliability.
+
+[Configuration](https://docs.defectdojo.com/en/open_source/installation/configuration/) explains the different ways to adjust settings and environment variables.
 
 
 # Prerequisites
@@ -147,7 +151,7 @@ docker exec -it django-defectdojo-uwsgi-1 ./manage.py changepassword admin
 ```
 
 # Logging
-For docker compose release mode the log level is INFO. In the other modes the log level is DEBUG. Logging is configured in `settings.dist.py` and can be tuned using a `local_settings.py`, see [template for local_settings.py](dojo/settings/template-local_settings). For example the deduplication logger can be set to DEBUG in a local_settings.py file:
+For docker compose release mode the log level is INFO. In the other modes the log level is DEBUG. Logging is configured in `settings.dist.py` and can be tuned using a `local_settings.py`, see [template for local_settings.py](../dojo/settings/template-local_settings)). For example the deduplication logger can be set to DEBUG in a local_settings.py file:
 
 
 ```

readme-docs/RELEASING.md

@@ -32,7 +32,7 @@ The steps are identical for both release types, unless specified otherwise below
 - Merge the PRs
 
 ### Always
-- Make sure there's a section in [upgrading.md](https://documentation.defectdojo.com/dev/getting_started/upgrading/) about any specific instructions when upgrading to this new release.
+- Make sure there's a section in [upgrading.md](../docs/content/en/open_source/upgrading) about any specific instructions when upgrading to this new release.
 
 - Remove existing draft releases with the same version number
 Due to the release drafter being a non-perfect match for our git flow based release process, we have to delete any draft that has already been created by the release drafter if it has the same versio number. This is probably not needed if you're doing a bugfix release.