finish clang format

example/stringView/stringView.cpp

diff --git a/example/stringView/stringView.cpp b/example/stringView/stringView.cpp
index 34f6841..b5e33e9 100644
--- a/example/stringView/stringView.cpp
+++ b/example/stringView/stringView.cpp
@@ -1,6 +1,6 @@
 #include "json/json.h"
-#include <iostream>
 #include <cstdlib>
+#include <iostream>
 
 #if defined(JSONCPP_HAS_STRING_VIEW)
 #include <string_view>