Docs: Specify that an issue is confidential

doc/user/application_security/sast/index.md

@@ -792,7 +792,7 @@ Some analyzers can be customized with CI/CD variables.
 | `SAST_GOSEC_CONFIG`         | Gosec      | **{warning}** **[Removed](https://gitlab.com/gitlab-org/gitlab/-/issues/328301)** in GitLab 14.0 - use custom rulesets instead. Path to configuration for Gosec (optional).                                                                                                                                                                                        |
 | `PHPCS_SECURITY_AUDIT_PHP_EXTENSIONS` | phpcs-security-audit | Comma separated list of additional PHP Extensions.                                                                                                                                                             |
 | `SAST_DISABLE_BABEL`        | NodeJsScan | **{warning}** **[Removed](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/64025)** in GitLab 13.5 |
-| `SAST_SEMGREP_METRICS` | Semgrep | Set to `"false"` to disable sending anonymized scan metrics to [r2c](https://r2c.dev/). Default: `true`. [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/330565) in GitLab 14.0.      |
+| `SAST_SEMGREP_METRICS` | Semgrep | Set to `"false"` to disable sending anonymized scan metrics to [r2c](https://r2c.dev/). Default: `true`. Introduced in GitLab 14.0 from the [confidential issue](../../project/issues/confidential_issues.md) `https://gitlab.com/gitlab-org/gitlab/-/issues/330565`.      |
 
 #### Custom CI/CD variables