Refine the fire safety info page of the mobile food vendor permit guide

**What is the URL?**
[Google doc draft](https://docs.google.com/document/d/1a0FcvwJb66geFf95nrO4ecVCWU7pJ6sTAehucDuUHcg/edit)
[Page editor in Joplin](https://joplin.herokuapp.com/admin/pages/123/edit/#tab-content)

**Have you documented this via the author notes field in Joplin?**
- [x] Yes!
- [ ] No, but I'll do it now

**Describe the content debt.**

Need to review this page with SMEs from Austin and Travis County fire depts.

1. Is all of the information up to date?
2. Any additions or edits you want to make?
3. Can you give specifics on what it means to use extension cords excessively? Any more specific steps people can follow, or do's and don'ts?

**What is the long-term, ideal solution for this content debt?**
More actionable tips, steps people can follow. Also, have a contact for questions about this.

**Is this related to a feature request issue? (Add the issue number below and add the issue as a dependency.)**

**What approvals will be needed to publish this content change?**

Austin Fire Dept.
Travis County Fire Dept.