Add note about redis server in WSL (#3828)

CHANGELOG.md

@@ -45,6 +45,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed dextr deployment (<https://github.com/openvinotoolkit/cvat/pull/3820>)
 - Migration of `dataset_repo` application (<https://github.com/openvinotoolkit/cvat/pull/3827>)
 - Helm settings for external psql database were unused by backend (<https://github.com/openvinotoolkit/cvat/pull/3779>)
+- Updated WSL setup for development (<https://github.com/openvinotoolkit/cvat/pull/3828>)
 
 ### Security
 

site/content/en/docs/contributing/development-environment.md

@@ -110,3 +110,6 @@ You develop CVAT under WSL (Windows subsystem for Linux) following next steps.
   ```
 
 - Run all commands from this installation guide in WSL Ubuntu shell.
+- You might have to manually start the redis server in wsl before you can start the configuration inside
+  Visual Studio Code. You can do this with `sudo service redis-server start`. Alternatively you can also
+  use a redis docker image instead of using the redis-server locally.