doc(en/zh): add —delay in global-config doc

cmd/root.go

@@ -99,7 +99,7 @@ func New() *cobra.Command {
 	cmd.PersistentFlags().Duration(consts.FlagReconnectTimeout, 5*time.Minute, "Telegram client reconnection backoff timeout, infinite if set to 0") // #158
 
 	cmd.PersistentFlags().String(consts.FlagTest, "", "use test Telegram client, only for developer")
-	cmd.PersistentFlags().Duration(consts.FlagDelay, 0, "delay between each download, forward and upload task")
+	cmd.PersistentFlags().Duration(consts.FlagDelay, 0, "set the delay between each download, forward and upload task")
 
 	// completion
 	_ = cmd.RegisterFlagCompletionFunc(consts.FlagNamespace, func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {

docs/content/en/guide/global-config.md

@@ -87,3 +87,15 @@ Set higher timeout or 0(INF) if you want faster speed.
 {{< command >}}
 tdl --pool 2
 {{< /command >}}
+
+## `--delay`
+
+set the delay between each download, forward and upload task. Default: `0s`.
+
+{{< hint info >}}
+Set higher delay time if you want to avoid flood ban.
+{{< /hint >}}
+
+{{< command >}}
+tdl --delay 5s
+{{< /command >}}

docs/content/zh/guide/global-config.md

@@ -86,3 +86,16 @@ tdl --debug
 {{< command >}}
 tdl --pool 2
 {{< /command >}}
+
+## `--delay`
+
+设置每个下载、转发和上传任务之间的延迟。默认值：`0s`。
+
+{{< hint info >}}
+如果你想避免因为短时间内产生大量请求被封禁，请设置更长的延迟时间。
+{{< /hint >}}
+
+{{< command >}}
+tdl --delay 5s
+{{< /command >}}
+