Update CHANGELOG.md

Author: grootstebozewolf

CHANGELOG.md

@@ -8,6 +8,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 - Updated Plotly.js to version 1.57.0. See the [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/v1.57.0/CHANGELOG.md) for more information. These changes are reflected in the auto-generated `plotly.graph_objects` module.
 
+### Fixed
+
+- Patch for offline rendering in IPython notebook.
+
 ## [4.11.0] - 2020-10-01
 
 ### Updated