slack channel is not shared

docs/ForkSetup.md

@@ -20,7 +20,7 @@ Not all secrets are required for each workflow. In the following list, each secr
 | BENCHMARK_KEY              | A private key used by SSH corresponding to a public key on the server | No                 | No       |
 | BENCHMARK_METAL_AUTH_TOKEN | The key required to access the bare metal provider API                | Yes                | No       |
 | BENCHMARK_METAL_PROJECT_ID | The project id from the bare metal provider for deployments           | Yes                | No       |
-| BENCHMARK_SLACK_CHANNEL    | Slack channel to notify on workflow completion (ex. @your-slack-user) | Yes                | Yes      |
+| BENCHMARK_SLACK_CHANNEL    | Slack channel to notify on workflow completion (ex. @your-slack-user) | No                 | Yes      |
 | BENCHMARK_SLACK_TOKEN      | Slack token for notification                                          | Yes                | Yes      |
 | BENCHMARK_SIGNING_KEY      | Use to GPG-sign published benchmark artifacts to maven central        | Yes                | Yes      |