Update CHANGELOG.md for PR #851

CHANGELOG.md

@@ -7,6 +7,19 @@ Changelog is rather internal in nature. See release notes for the public overvie
 <!-- [DO NOT REMOVE-USED BY GH ACTION] PASTE CHANGELOG -->
 
 
+- [#851]
+  - **Description:** Prepends all internal `KCard` class names with `k`
+  - **Products impact:** bugfix
+  - **Addresses:** Prevent from aggressive overrides from global Vuetify styles in Studio, for example when `KCard`'s `.title` styles were changed unexpectedly by the Vuetify's `.title` styles, causing text being cut off and incorrectly styled overall. Reported in https://github.com/learningequality/studio/pull/4803.
+  - **Components:** `KCard`
+  - **Breaking:** no
+  - **Impacts a11y:** no
+  - **Guidance:** -
+
+[#851]: https://github.com/learningequality/kolibri-design-system/pull/851
+
+
+
 - [#838]
   - **Description:** Re-organizes `KCard` styles to improve content tolerance and simplify styles, and fixes the thumbnail overflow problems in horizontal layout with small thumbnail
   - **Products impact:** bugfix