Update changelog.md

Author: taohsu

components/control/radio_button/dsm/changelog.md

@@ -1,5 +1,3 @@
-# Changelog
-
 | Date | Number | Notes | Designer |
 |------|--------|-------|----------|
 | Nov 7, 2025 | 1.4.0 | <ul><li>A new Read-only variant has been added for the .Radiobutton.Indicator component, supporting two boolean variants — Selected = True/False. This variant introduces two new color tokens: <ul><li>ouds/color/action/read-only-primary — used for the indicator (shape) <li>ouds/color/action/read-only-secondary — used for the stroke</ul> <li>The new Read-only variant has been integrated into the Read-only variant of both the Radio button and Radio button Item components. <li>We replaced the token in Error text container ouds-control-text-input-space-padding-block-top-helper-text with ouds-control-control-item-space-padding-block-top-error-text. <li>"Helper text" is now called "Description". <li>"Additional label" is now called "Extra label".</ul> | Anton Astafev |