docs(overlay): update closeOnEsc related docs in CHANGELOG.md

Author: wnvko

CHANGELOG.md

@@ -8,7 +8,7 @@ All notable changes for each version of this project will be documented in this
 - `igxCombo`
     - **Behavioral Change** - Change default positioning strategy from `ConnectedPositioningStrategy` to `AutoPositionStrategy`. The [`Auto`](https://www.infragistics.com/products/ignite-ui-angular/angular/components/overlay_position.html#auto) strategy will initially try to show the element like the Connected strategy does. If the element goes out of the viewport Auto will flip the starting point and the direction, i.e. if the direction is 'bottom', it will switch it to 'top' and so on. If after flipping direction the content goes out of the view, auto strategy will revert to initial start point and direction and will push the content into the view. Note after pushing the content it may hide the combo's input.
 - `IgxOverlay`
-    - Added new property - `closeOnEsc` - in `OverlaySettings`. The overlay can now be prevented from closing, on escape keypress, by setting the property to `false`, it is `false` by default.
+    - **Behavioral Change** - Added new property `closeOnEsc` in `OverlaySettings`. Should overlay close or not on escape keypress can now be controlled via this new property. By default `closeOnEsc` is set to `false`.
 - `igxDialog`
     - Added `closeOnEscapeKey` - with it, the dialog can be allowed or prevented from closing when `Esc` is pressed.
 - `IgxNavbar`: