docs: Added slack badge to README

README.md

@@ -5,6 +5,7 @@
 [![Test](https://github.com/TriPSs/nestjs-query/actions/workflows/test.yml/badge.svg?branch=master)](https://github.com/TriPSs/nestjs-query/actions/workflows/test.yml)
 [![codecov](https://codecov.io/gh/TriPSs/nestjs-query/branch/master/graph/badge.svg?token=29EX71ID2P)](https://codecov.io/gh/TriPSs/nestjs-query)
 [![Known Vulnerabilities](https://snyk.io/test/github/tripss/nestjs-query/badge.svg?targetFile=package.json)](https://snyk.io/test/github/tripss/nestjs-query?targetFile=package.json)
+[![slack](https://img.shields.io/badge/slack-nestjsquery-brightgreen.svg?logo=slack)](https://join.slack.com/t/nestjsquery/shared_invite/zt-27dvu0tye-tOcAmeQ0PRSCEInW6P3h9g)
 
 # nestjs-query
 
@@ -62,4 +63,4 @@ $ yarn nx build query-graphql
 
 ## Collaboration
 
-If you have questions or [issues](https://github.com/TriPSs/nestjs-query/issues), please [open an issue](https://github.com/TriPSs/nestjs-query/issues/new)!
+If you have questions or [issues](https://github.com/TriPSs/nestjs-query/issues), please [open an issue](https://github.com/TriPSs/nestjs-query/issues/new)!