clang-format: set IndentPPDirectives to AfterHash

extras/tests/FailingBuilds/read_long_long.cpp

@@ -6,11 +6,11 @@
 #include <ArduinoJson.h>
 
 #if defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ >= 8
-#error This test requires sizeof(long) < 8
+#  error This test requires sizeof(long) < 8
 #endif
 
 #if !ARDUINOJSON_HAS_LONG_LONG
-#error This test requires C++11
+#  error This test requires C++11
 #endif
 
 ARDUINOJSON_ASSERT_INTEGER_TYPE_IS_SUPPORTED(long long)