fix logfile name (#731)

modules/setting/setting.go

@@ -931,7 +931,7 @@ func newLogService() {
 		case "console":
 			LogConfigs[i] = fmt.Sprintf(`{"level":%s}`, level)
 		case "file":
-			logPath := sec.Key("FILE_NAME").MustString(path.Join(LogRootPath, "gogs.log"))
+			logPath := sec.Key("FILE_NAME").MustString(path.Join(LogRootPath, "gitea.log"))
 			if err = os.MkdirAll(path.Dir(logPath), os.ModePerm); err != nil {
 				panic(err.Error())
 			}