Create wiki page to document test procedure for issues that modify issue templates

[roslynwythe]

Overview

We need to document the process for testing issues that modify issue templates.

Action Items

• Write a wiki page describing the process for testing issues that modify issue templates, based on Creating issues to Add Missing Labels to Issue Templates #4307 (comment)
• Do not include the last item "Copy these sections from the Issue into the PR" and the subitems
• As described in the Resources below, a draft wiki page will be created in a comment within this issue. When the draft wiki page is ready for review, move this issue into the Questions/In Review column.

Resources/Instructions

• We are currently in the process of moving the old wiki to the new website-wiki repo, so we will not be making any changes or additions to the old wiki at this time. Thus, we will be adding wiki content through a different process now. Follow the instructions give in How to Contribute to the Wiki