type enum layout is broken in extension docs

**Describe the bug**
there are line breaks between each types enum in the extension API docs, and that's hard to read.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to https://developer.chrome.com/docs/extensions/reference/history/#type-TransitionType
2. Look at the types below the paragraph "The transition type for this visit from its referrer."

**Expected behavior**
Types are listed in a single paragraph.

**Screenshots**
If applicable, add screenshots to help explain your problem.


**Desktop (please complete the following information):**
- confirmed in Chrome/Firefox on Windows/macOS

**Smartphone (please complete the following information):**
- haven't checked