docs: cancellation

README.md

@@ -151,7 +151,10 @@ If you don't follow these steps, the bot may not work.
 - `/version` to show the version.
 - `/help` for help.
 
-The bot support files with extension `.t2o` as scripts. You can use them to automate the bot.
+The bot support files with extension `.t2o` as batch scripts. You can use them to automate the bot.
+
+To cancel a job, delete the responded message.  
+To cancel batch or links tasks, delete the message you sent.
 
 ### Example
 - `/links https://t.me/c/xxxxxxx/100 2` will transfer `https://t.me/c/xxxxxxx/100` and `https://t.me/c/xxxxxxx/101`.

src/handlers/docs.rs

@@ -83,6 +83,7 @@ const INSTRUCTION: &str = "\
 - Tap the file name on the Progress message to locate the job.
 - To upload files through url, the headers of the file response must includes Content-Length.
 - To cancel a job, delete the responded message.
+- To cancel batch or links tasks, delete the message you sent.
 - Support files with extension .t2o as scripts.
 
 See <a href=\"https://github.com/hlf20010508/telegram-onedrive#example\">example</a>.