Update description of commit 4cc0867f in Bug Fixes

It turns out that the crashes fixed by commit 4cc0867f are unrelated to
frame scaling (AOM_SCALING_MODE). It is, however, related to
multithreading.

Change-Id: I6003dc43dffd629a721ad92f5dce39b568dbde25

CHANGELOG

diff --git a/CHANGELOG b/CHANGELOG
index 6b598ec..12f0f4e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -36,9 +36,10 @@
       only regions where high filter strengths are needed.
 
   - Bug Fixes
-    * Commits 4cc0867f, 74aaa1ef: fix AOM_SCALING_MODE crashes when
-      restoration filtering or compound mask prediction modes are used by the
-      encoder.
+    * Commit 4cc0867f: fix multithreading crashes when loop restoration
+      filtering is used by the encoder.
+    * Commit 74aaa1ef: fix AOM_SCALING_MODE crashes when compound mask
+      prediction modes are used by the encoder.
 
 2026-03-17 v3.13.2
   This release includes several bug fixes. This release is ABI