Update changelog

Author: federicobond

docs/changes.rst

@@ -17,6 +17,8 @@ Pending
 * Fixed font family for code blocks and stack traces in the toolbar.
 * Added test to confirm Django's ``TestCase.assertNumQueries`` works.
 * Fixed string representation of values in settings panel.
+* Added open in editor functionality to templates panel using ``EDITOR``
+  setting.
 
 6.1.0 (2025-10-30)
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