Add missing changelog link.
@@ -201,6 +201,7 @@ This means that druid no longer requires cairo on macOS and uses Core Graphics i
[#953]: https://github.com/xi-editor/druid/pull/953
[#954]: https://github.com/xi-editor/druid/pull/954
[#959]: https://github.com/xi-editor/druid/pull/959
+[#949]: https://github.com/xi-editor/druid/pull/949
## [0.5.0] - 2020-04-01
