changelog: fix text

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/ChangeLog.d/8709.txt b/ChangeLog.d/8709.txt
index 8c15797..a9b2751 100644
--- a/ChangeLog.d/8709.txt
+++ b/ChangeLog.d/8709.txt
@@ -1,5 +1,3 @@
 Features
-   * The new function mbedtls_pk_copy_from_psa() provides a way to set up
-     a PK context starting from a PSA key. The new function
-     mbedtls_pk_copy_from_psa() provides a way to set up a PK context with the
-     same content as a PSA key.
+   * The new function mbedtls_pk_copy_from_psa() provides a way to set up a PK
+     context with the same content as a PSA key.