GITBOOK-29: change request with no subject merged in GitBook

SUMMARY.md

@@ -33,10 +33,10 @@
 ## For Developers
 
 * [Contributing](for-developers/contributing.md)
+* [Environment setup](for-developers/dev-env-setup.md)
 * [Translations ( web )](for-developers/translations-web/README.md)
   * [Switching language](for-developers/translations-web/switching-language.md)
   * [Adding translations](for-developers/translations-web/adding-translations.md)
-* [Environment setup](for-developers/dev-env-setup.md)
 * [Other resources](for-developers/other-resources.md)
 
 ## Contact us

for-developers/contributing.md

@@ -5,20 +5,20 @@ All source code of our app is located in three repositories
 * [Core:](https://github.com/DefGuard/defguard) backend and server for our app
 * [Gateway:](https://github.com/DefGuard/gateway) VPN client which connects core with wireguard interface
 
-You can find how to setup your development environment in README.md of all repositories
+You can find how to setup your development environment in [the Environment setup article](dev-env-setup.md).
 
-### Found a bug?
+We have a dedicated (closed only for developers) Matrix channel. If you publish a pull request and it will be accepted you will be invited to the developer's channel. For now, you can join our [General discussion](https://matrix.to/?ref=teonite.com#/#defguard:teonite.com).
 
-If you found a bug you can submit issue with description on appropriate repository or submit a Pull Requests with fix.
+### Found a bug?
 
-**Note** If you are adding bug issue please add description with your environment and steps to reproduce if possible
+If you found a bug you [can submit it here](https://github.com/DefGuard/defguard/issues/new?assignees=\&labels=bug\&template=bug\_report.md\&title=).
 
 ### Pull requests
 
-All pull requests should be done against master branch of any repository from above.
+All pull requests should be done against the master branch of any repository from above.
 
 Good pull request should have:
 
-* Description about changes made
+* Description of changes made
 * New tests if or necessary
 * Passing CI