typo

Former-commit-id: 89e00f1b579a2f78737efcafc04507f0f31049b1

cpp/unittest/vecwise_test.cpp

@@ -16,7 +16,7 @@ using namespace zilliz::vecwise;
 
 int main(int argc, char **argv) {
     std::string exe_path = server::CommonUtil::GetExePath();
-    std::string config_filename = exe_path + "../../../conf/server_config.yaml";
+    std::string config_filename = exe_path + "/../../../conf/server_config.yaml";
     zilliz::vecwise::server::ServerConfig& config = zilliz::vecwise::server::ServerConfig::GetInstance();
     config.LoadConfigFile(config_filename);
     std::cout << "Load config file form: " << config_filename << std::endl;