docs: added notification channel

roles/grafana/README.md

@@ -95,6 +95,74 @@ Configure Grafana organizations, dashboards, folders, datasources, teams and use
 | org_name | no |
 | role | no |
 | state | no |
+| [**grafana_notification_channel**](https://docs.ansible.com/ansible/latest/collections/community/grafana/grafana_notification_channel_module.html) |
+| dingding_message_type | no |
+| dingding_url | no |
+| disable_resolve_message | no |
+| discord_message_content | no |
+| discord_url | no |
+| email_addresses | no |
+| email_single | no |
+| googlechat_url | no |
+| hipchat_api_key | no |
+| hipchat_room_id | no |
+| hipchat_url | no |
+| include_image | no |
+| is_default | no |
+| kafka_topic | no |
+| kafka_url | no |
+| line_token | no |
+| name | yes |
+| opsgenie_api_key | no |
+| opsgenie_auto_close | no |
+| opsgenie_override_priority | no |
+| opsgenie_url | no |
+| org_id | no |
+| pagerduty_auto_resolve | no |
+| pagerduty_integration_key | no |
+| pagerduty_message_in_details | no |
+| pagerduty_severity | no |
+| prometheus_password | no |
+| prometheus_url | no |
+| prometheus_username | no |
+| pushover_alert_sound | no |
+| pushover_api_token | no |
+| pushover_devices | no |
+| pushover_expire | no |
+| pushover_ok_sound | no |
+| pushover_priority | no |
+| pushover_retry | no |
+| pushover_user_key | no |
+| reminder_frequency | no |
+| sensu_handler | no |
+| sensu_password | no |
+| sensu_source | no |
+| sensu_url | no |
+| sensu_username | no |
+| slack_icon_emoji | no |
+| slack_icon_url | no |
+| slack_mention_channel | no |
+| slack_mention_groups | no |
+| slack_mention_users | no |
+| slack_recipient | no |
+| slack_token | no |
+| slack_url | no |
+| slack_username | no |
+| state | no |
+| teams_url | no |
+| telegram_bot_token | no |
+| telegram_chat_id | no |
+| threema_api_secret | no |
+| threema_gateway_id | no |
+| threema_recipient_id | no |
+| type | yes |
+| uid | no |
+| victorops_auto_resolve | no |
+| victorops_url | no |
+| webhook_http_method | no |
+| webhook_password | no |
+| webhook_url | no |
+| webhook_username | no |
 
 ## Example Playbook