fix: fix incorrect log message in info_collector::on_app_stat (#553)

rdsn @ 11e1becc

-Subproject commit c5e1e671fd3c0dbac7805f8e65b01c10519a12bf
+Subproject commit 11e1becc8f4c3f91fcbe84c6ee6c77e0b28f3186

src/server/info_collector.cpp

@@ -162,10 +162,10 @@ void info_collector::on_app_stat()
     }
     get_app_counters(all_stats.app_name)->set(all_stats);
 
-    ddebug("stat apps succeed, app_count = %d, total_read_qps = %.2f, total_write_qps = %.2f",
-           (int)(all_rows.size() - 1),
-           all_stats.get_total_read_qps(),
-           all_stats.get_total_write_qps());
+    ddebug_f("stat apps succeed, app_count = {}, total_read_qps = {}, total_write_qps = {}",
+             all_rows.size(),
+             all_stats.get_total_read_qps(),
+             all_stats.get_total_write_qps());
 }
 
 info_collector::app_stat_counters *info_collector::get_app_counters(const std::string &app_name)