fix line length of ChangeLog

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/ChangeLog.d/rsa-padding-accessor.txt b/ChangeLog.d/rsa-padding-accessor.txt
index da793f8..ad14686 100644
--- a/ChangeLog.d/rsa-padding-accessor.txt
+++ b/ChangeLog.d/rsa-padding-accessor.txt
@@ -1,4 +1,4 @@
 Features
-   * Add functions mbedtls_rsa_get_padding_mode() and mbedtls_rsa_get_md_alg() to read
-     non-public fields for padding mode and hash id from an mbedtls_rsa_context, as
-     requested in #6917.
+   * Add functions mbedtls_rsa_get_padding_mode() and mbedtls_rsa_get_md_alg()
+     to read non-public fields for padding mode and hash id from
+     an mbedtls_rsa_context, as requested in #6917.