Steps to reproduce:

1. Go to a trigger configuration and add a URL, it works.
2. Type "microsoft-edge:" before "https://xx.." to make it open directly on EDGE Browser instead of default browser.
3. It doesn't allow to save because of URL pattern validation.

Result:
See screenshot as ZBXURL.png

Expected:
I want to be able to give URL for trigger like "microsoft-edge:https://support.zabbix.com". It seems like just a pattern validation update.