Added changelog entiries.

Author: abhinavgandham

modules/ROOT/pages/changelog.adoc

@@ -4,6 +4,14 @@
 
 NOTE: This is the {productname} Community version changelog. For information about the latest {cloudname} or {enterpriseversion} Release, see: xref:release-notes.adoc[{productname} Release Notes].
 
+== xref:8.2.1-release-notes.adoc[8.2.1 - 2025-11-06]
+
+### Fixed
+* Resizing the editor's height would add a fixed width value.
+// #TINY-13138
+* Help Plugin did not contain an entry for the Fullpage HTML plugin.
+// #TINY-13183
+
 == xref:8.2.0-release-notes.adoc[8.2.0 - 2025-10-23]
 
 ### Improved
@@ -13,7 +21,7 @@ NOTE: This is the {productname} Community version changelog. For information abo
 ### Fixed
 * UI elements like focus outlines and placeholders would be visible after printing.
 // #TINY-12584
-* The `open` attribute on `<details>` elements is now normalized to `open="open"` when the accordion plugin is enabled. 
+* The `open` attribute on `<details>` elements is now normalized to `open="open"` when the accordion plugin is enabled.
 //#TINY-12862
 * Tooltips on toolbar buttons sometimes remained visible if the button icon was updated while hovered.
 // #TINY-12289