Create a Guide/Template: Usability testing vs A/B testing

### Overview
We need to create a guide to make clear the difference between usability testing vs A/B testing so that the UX team members know when to use each.

### Action Items
The phases in the guide-making process are listed below. Each phase displayed in blue is linked to a wiki page with instructions on how to complete that phase. Open the wiki page in a new tab, copy the instructions for each part into the section labeled 'Tasks' at the bottom of this issue, and complete each task listed.
- [ ] [Gather Examples Solo](https://github.com/hackforla/guides/wiki/How-to-Gather-Examples:-Solo) (open in a new tab)
- [ ] [Gather Examples Collaboratively](https://github.com/hackforla/guides/wiki/Phase-2-%E2%80%90-Gather-Examples-Collaboratively)
- [ ] [Create a Guide Draft](https://github.com/hackforla/guides/wiki/How-to-Draft-a-Guide)
- [ ] If needed, create a template
- [ ] [Have your guide peer reviewed](https://github.com/hackforla/guides/wiki/Peer-Reviews-for-Guides)
- [ ] [Present your guide for leadership review](https://github.com/hackforla/guides/wiki/Submitting-Your-Guide-for-Leadership-Review)
### Resources/Instructions
Google Drive Folder for this Guide’s documents [0043 [DRAFT] Usability testing vs A/B testing](https://drive.google.com/drive/folders/1R0pk2I9JWkQU4PZ7qEBBf-bMbScVflwG)
### Projects to Check
### Tasks
- [ ] This is where you will copy instructions from the wiki page for the step you are currently on.

まず、例の収集、草稿作成、ピアレビュー、リーダーシップレビューに関するリンク先の wiki の手順を確認し、次に Google Drive の「0043 [DRAFT] Usability testing vs A/B testing」フォルダを調査します。完了条件は、UX チームのメンバーがいつ Usability testing と A/B testing のどちらを使うべきかを明確に説明するガイドを作成し、レビューすることです。

索引モデルが issue の本文から書いたものです。