update alert bot docs (#958)

* update alert bot docs

* improve readability

docs/v3/guidelines/nodes/maintenance-guidelines/mytonctrl-private-alerting.md

@@ -3,7 +3,9 @@
 ## Overview
 
 MyTonCtrl Private Alerting Bot is a tool that allows you to receive notifications about the status of your node via Telegram Bot. 
-It is a part of the MyTonCtrl toolset and is available for both validators and liteservers. It requires to create a separate private bot in Telegram and set it up in MyTonCtrl. One bot can be used to monitor multiple nodes.
+The bot can only send notification messages to Telegram, the bot does NOT manage the validator and does not process any commands sent to it.
+It is a part of the MyTonCtrl toolset and is available for both validators and liteservers. It requires to create a separate private bot in Telegram and set it up in MyTonCtrl. 
+One bot can be used to monitor multiple nodes.
 
 ## Setup
 
@@ -13,7 +15,7 @@ To set up the MyTonCtrl Alerting Bot, follow these steps:
 
 1. Go to https://t.me/BotFather and create bot using command `/newbot`. After that, you will receive a `BotToken`.
 2. Go to your bot and press the `Start` button. This will allow you to receive messages from the bot.
-3. If you want to receive messages from the bot in a group (chat), add the bot to the group and give it the necessary rights (make group admin).
+3. Bot can send messages to either private messages or group. If you want to receive messages from the bot in a group (chat) - add the bot to the group.
 4. Go to https://t.me/getmyid_bot and press the `Start` button. It will reply you with your `ChatId`, use that if you want to receive messages directly to your Telegram account.
 If you want to receive messages in a group, add the bot to the group, and it will reply with the `ChatId` of the group.
 
@@ -34,38 +36,41 @@ If you want to receive messages in a group, add the bot to the group, and it wil
     ```bash
     MyTonCtrl> set ChatId <ChatId>
     ```
+If everything is fine you will receive a welcome messages with all possible alerts listed. 
 
-4. Check that the bot is able to send messages by running the command
 
-    ```bash
-    MyTonCtrl> test_alert
-    ``` 
-    You should receive a message from the bot in your Telegram account or chat.
-
-
-## Supported Alerts
+## Supported alerts
 
 The MyTonCtrl Alert Bot supports the following alerts:
 
-* Validator's wallet balance is low
-* Node's db usage is more than 80%
-* Node's db usage is more than 95%
-* Validator had low efficiency in the round
-* Node is out of sync
-* Node is not running (service is down)
-* Node is not answering to ADNL connection
-* Validator created zero blocks for past 6 hours
-* Validator has been slashed in the previous validation round
-* Validator's stake has not been accepted
-* Validator's stake has been accepted (info alert with no sound)
-* Validator's stake has not been returned
-* Validator's stake has been returned (info alert with no sound)
-* There is an active network proposal that has many votes but is not voted by the validator
-
-## En(dis)bling Alerts
+- Validator's wallet balance is less than 10 TON
+- Node's db usage is more than 80%
+- Node's db usage is more than 95%
+- Validator had efficiency less than 90% in the validation round
+- Node is out of sync on more than 20 sec
+- Node is not running (service is down)
+- Node is not answering to ADNL connection
+- Validator has not created any blocks in the 6 hours
+- Validator has been slashed in the previous validation round
+- Validator's stake has not been accepted
+- Validator's stake has been accepted (info alert with no sound)
+- Validator's stake has been returned (info alert with no sound)
+- Validator's stake has not been returned
+- There is an active network proposal that has many votes (more than 50% of required) but is not voted by the validator
+
+## Enabling and disabling alerts
 
 To enable or disable alerts, use the following commands:
 
-* To enable an alert, use the command `enable_alert <alert-name>`.
-* To disable an alert, use the command `disable_alert <alert-name>`.
-* To check the status of alerts, use the command `list_alerts`.
+* To enable an alert, use command `enable_alert <alert-name>`.
+* To disable an alert, use command `disable_alert <alert-name>`.
+* To check the status of alerts, use command `list_alerts`.
+* To send test message, use command `test_alert`.
+
+## Disabling the Alert Bot
+
+To disable the Alert Bot, use command
+
+```bash
+MyTonCtrl> disable_mode alert-bot
+```