fix: add correct slack webhook url link

frappe/email/doctype/notification/notification.js

@@ -151,6 +151,7 @@ frappe.ui.form.on('Notification', {
 	},
 	refresh: function(frm) {
 		frappe.notification.setup_fieldname_select(frm);
+		frappe.notification.setup_example_message(frm);
 		frm.get_field('is_standard').toggle(frappe.boot.developer_mode);
 		frm.trigger('event');
 	},

frappe/email/doctype/notification/notification.json

@@ -66,7 +66,7 @@
   },
   {
    "depends_on": "eval:doc.channel=='Slack'",
-   "description": "To use Slack Channel, add a <a href=\"\\#Form/Slack Webhook URL\">Slack Webhook URL</a>.",
+   "description": "To use Slack Channel, add a <a href=\"#List/Slack%20Webhook%20URL/List\">Slack Webhook URL</a>.",
    "fieldname": "slack_webhook_url",
    "fieldtype": "Link",
    "label": "Slack Channel",
@@ -281,7 +281,7 @@
  ],
  "icon": "fa fa-envelope",
  "links": [],
- "modified": "2020-08-11 19:24:35.479373",
+ "modified": "2020-09-03 08:45:21.289300",
  "modified_by": "Administrator",
  "module": "Email",
  "name": "Notification",

frappe/integrations/doctype/twilio_settings/twilio_settings.py

@@ -11,7 +11,7 @@ from frappe.utils.password import get_decrypted_password
 from six import string_types
 
 class TwilioSettings(Document):
-	def validate(self):
+	def on_update(self):
 		self.validate_twilio_credentials()
 
 	def validate_twilio_credentials(self):