clang-format: update to latest from docs repo

This is from openbmc/docs/style/cpp/.clang-format

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I5b80bb568451706afb6d268b41e1a5357a2ca6db
diff --git a/settings.hpp b/settings.hpp
index 7571fe1..dca5cf9 100644
--- a/settings.hpp
+++ b/settings.hpp
@@ -1,8 +1,9 @@
 #pragma once
 
-#include <string>
 #include <sdbusplus/bus.hpp>
 
+#include <string>
+
 namespace settings
 {