[update] Whats new before release v2.0.3

Author: serhiipylypchuk1991

docs/news/whats_new.md

@@ -4,6 +4,19 @@ title: What's new
 description: You can explore what's new in DHTMLX RichText and its release history in the documentation of the DHTMLX JavaScript UI library. Browse developer guides and API reference, try out code examples and live demos, and download a free 30-day evaluation version of DHTMLX RichText.
 ---
 
+## Version 2.0.3
+
+Released on August 27, 2025
+
+### Fixes
+
+- Clicking on a horizontal line causes a script error
+- The default line height is incorrect
+- Content styles include duplicate selectors
+- Plain text blocks ignore style changes when parsing HTML
+- The parser ignores escaped font names in HTML
+- The parser ignores `margin-left` and `line-height` properties in HTML
+
 ## Version 2.0.2
 
 Released on August 4, 2025