Missing env variables information on Azure Comment Reporter

This env variables are not documented:

https://github.com/oxsecurity/megalinter/blob/2402a653f4d13b4a4be7b0ab2df3b5b9fa325d7e/megalinter/reporters/AzureCommentReporter.py#L6

https://megalinter.io/latest/reporters/AzureCommentReporter/