update ChangLog credit

Signed-off-by: Jeffrey Martin <Jeffrey_Martin@rapid7.com>
diff --git a/ChangeLog b/ChangeLog
index 26965bd..c69bc8b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,7 +9,7 @@
      Previously, this could lead to functionally incorrect assembly being
      produced by some optimizing compilers, showing up as failures in
      e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
-     by @aurel32 and submitted by Jeffrey Martin.
+     by Aurelien Jarno and submitted by Jeffrey Martin.
 
 = mbed TLS 2.7.9 branch released 2018-12-21