Fix telegram link and remove old page

source/_components/telegram_bot.markdown

@@ -16,7 +16,7 @@ Use Telegram on your mobile device to send messages or commands to your Home Ass
 
 A command looks like `/thecommand`
 
-When received by hass it will fire a `telegram.command` event on the event bus with the following `event_data`:
+When received by hass it will fire a `telegram_command` event on the event bus with the following `event_data`:
 
 ```yaml
 command: "/thecommand"
@@ -36,7 +36,7 @@ alias: 'telegram bot that reply pong to ping'
 hide_entity: true
 trigger:
   platform: event
-  event_type: telegram.command
+  event_type: telegram_command
   event_data:
     command: '/ping'
 action:
@@ -50,7 +50,7 @@ Example that show keyboard interaction with `notify.telegram`
 ```yaml
 trigger:
   platform: event
-  event_type: telegram.command
+  event_type: telegram_command
   event_data:
     command: '/start'
 action:
@@ -68,13 +68,13 @@ and an automation to trigger a related command "/siren".
 ```yaml
 trigger:
   platform: event
-  event_type: telegram.command
+  event_type: telegram_command
   event_data:
     command: '/siren'
 action:
   - service: homeassistant.turn_on
     entity_id: switch.vision_zm1601eu5_battery_operated_siren_switch_9_0
-  - delay: 
+  - delay:
       seconds: 10
   - service: homeassistant.turn_off
     entity_id: switch.vision_zm1601eu5_battery_operated_siren_switch_9_0

source/_components/telegram_bot.polling.markdown

@@ -34,5 +34,4 @@ Configuration variables:
 - **allowed_chat_ids** (*Required*): A list of user in the `user_id` Telegram format enabled to interact to webhook
 - **api_key** (*Required*): The API token of your bot.
 
-To get your `chat_id` and `api_key` follow the instructions [here](/components.notify.telegram) .
-
+To get your `chat_id` and `api_key` follow the instructions [here](/components/notify.telegram) .