docs(filter vulnerabilities): fix link (#1880)

fixed link to helper functions

Author: DmitriyLewen

docs/vulnerability/examples/filter.md

@@ -352,5 +352,5 @@ Total: 9 (UNKNOWN: 0, LOW: 0, MEDIUM: 0, HIGH: 4, CRITICAL: 5)
 
 </details>
 
-[helper]: https://github.com/aquasecurity/trivy/tree/{{ git.tag }}/pkg/vulnerability/module.go
+[helper]: https://github.com/aquasecurity/trivy/tree/{{ git.tag }}/pkg/result/module.go
 [policy]: https://github.com/aquasecurity/trivy/tree/{{ git.tag }}/contrib/example_policy