Fix typo in changelog
Yeah, I know, not a memorable first contribution to flux :)
- CLI help examples updated with new resource ID format [weaveworks/flux#945](https://github.com/weaveworks/flux/pull/945)
- Fix a panic caused by accessing a `nil` map when logging events [weaveworks/flux#975](https://github.com/weaveworks/flux/pull/975)
- Properly support multi-line lock messages [weaveworks/flux#978](https://github.com/weaveworks/flux/pull/978)
-- Ignore Helm charts when looking for Kubernetes manifests [weaveworks/flux#993](https://github.com/weaveworks/flux/pull/9993)
+- Ignore Helm charts when looking for Kubernetes manifests [weaveworks/flux#993](https://github.com/weaveworks/flux/pull/993)
### Improvements
