Remove url from sms notification, change format (#2317)

# What this PR does
Remove link from sms notification to avoid difficulties with different
countries anti-spam regulations


## Which issue(s) this PR fixes

## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)

---------

Co-authored-by: Joey Orlando <joey.orlando@grafana.com>

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Removed url from sms notification, changed format ([2317](https://github.com/grafana/oncall/pull/2317))  
+
 ## v1.3.4 (2023-07-05)
 
 ### Added

engine/apps/alerts/incident_appearance/renderers/sms_renderer.py

@@ -18,17 +18,9 @@ class AlertGroupSmsRenderer(AlertGroupBaseRenderer):
     def render(self):
         templated_alert = self.alert_renderer.templated_alert
         title = str_or_backup(templated_alert.title, DEFAULT_BACKUP_TITLE)
-        if self.alert_group.channel.organization.slack_team_identity and (
-            permalink := self.alert_group.slack_permalink
-        ):
-            incident_link = permalink
-        else:
-            incident_link = self.alert_group.web_link
         return (
-            f"You are invited to check an incident #{self.alert_group.inside_organization_number} with title "
-            f'"{title}" in Grafana OnCall organization: "{self.alert_group.channel.organization.stack_slug}", '
-            f"alert channel: {self.alert_group.channel.short_name}, "
-            f"alerts registered: {self.alert_group.alerts.count()}, "
-            f"{incident_link}\n"
-            f"Your Grafana OnCall <3"
+            f"Grafana OnCall: Alert group #{self.alert_group.inside_organization_number}"
+            f'"{title}" from stack: "{self.alert_group.channel.organization.stack_slug}", '
+            f"integration: {self.alert_group.channel.short_name}, "
+            f"alerts registered: {self.alert_group.alerts.count()}."
         )

grafana-plugin/src/components/AlertTemplates/CommonAlertTemplatesForm.config.ts

@@ -45,8 +45,9 @@ export const commonTemplateForEdit: { [id: string]: TemplateForEdit } = {
   },
   sms_title_template: {
     name: TemplateOptions.SMS.key,
-    displayName: 'SMS title',
-    description: '',
+    displayName: 'Sms title',
+    description:
+      "Result of this template will be used as title of SMS message. Please don't include any urls, or phone numbers, to avoid SMS message being blocked by carriers.",
     type: 'plain',
   },
   phone_call_title_template: {