Update changelog to call out MinGW

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/ChangeLog.d/fix-msvc-version-guard-format-zu.txt b/ChangeLog.d/fix-msvc-version-guard-format-zu.txt
index 7e68ddb..e61cd7d 100644
--- a/ChangeLog.d/fix-msvc-version-guard-format-zu.txt
+++ b/ChangeLog.d/fix-msvc-version-guard-format-zu.txt
@@ -1,7 +1,7 @@
 Bugfix
    * Fix definition of MBEDTLS_PRINTF_SIZET to prevent runtime crashes that
      occurred whenever SSL debugging was enabled on a copy of Mbed TLS built
-     with Visual Studio 2013.
+     with Visual Studio 2013 or MinGW.
      Fixes #10017.
    * Remove Everest Visual Studio 2010 compatibility headers, which could
      interfere with standard CRT headers in certain situations, eg. when