spelling: investigate

Author: jsoref

src/test_lib_json/jsontest.cpp

@@ -398,7 +398,7 @@ void Runner::preventDialogOnCrash() {
   _CrtSetReportHook(&msvcrtSilentReportHook);
 #endif // if defined(_MSC_VER)
 
-// @todo investiguate this handler (for buffer overflow)
+// @todo investigate this handler (for buffer overflow)
 // _set_security_error_handler
 
 #if defined(_WIN32)