Update cpu_external_function.cpp

src/ngraph/runtime/cpu/cpu_external_function.cpp

@@ -1982,7 +1982,7 @@ void runtime::cpu::CPU_ExternalFunction::build()
                         file_util::path_join(s_debug_dir, m_function_name + "_debug.txt");
                     std::stringstream ss;
 
-                    ss << "EXECUTION PLAN:\n";
+                    ss << "\nEXECUTION PLAN:\n";
                     for (size_t i = 0; i < functors.size(); i++)
                     {
                         ss << op_names.at(i) << " will be executed with the following inputs:\n";