Update daily_file_sink.h

include/spdlog/sinks/daily_file_sink.h

@@ -30,7 +30,8 @@ struct daily_filename_calculator
     {
         filename_t basename, ext;
         std::tie(basename, ext) = details::file_helper::split_by_extension(filename);
-		return fmt::format(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}"), basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday, ext);        
+		return fmt::format(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}"), 
+            basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday, ext);        
     }
 };