Steps to reproduce:

1. go to standard documentation page about webhooks;
2. try to create new webhook from scratch.

Result:

• it is not enough information for that;
• some information is just wrong or inaccurate.

Expected:

• to have a manual that contains a full and correct information for new webhook creation.

(The specific complaints will be below in comments. I'm workiing with Zabbix v5.0 LTS; but my notes, probably, could be applied for newer version also – 5.2)