[ARROW-16994] [Docs][CI] Clean up some docs warnings and increase CI timeout

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.0.0
• Component/s: Continuous Integration, Documentation
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/32308
• Assignee: David Li
• Reporter: David Li
• Created: 06/Jul/22 22:22
• Updated: 11/Jan/23 11:47
• Resolved: 07/Jul/22 13:16

Description

The docs are starting to take just about 30 minutes to build, causing spurious timeouts.

Also, there are several warnings that could/should be fixed.

Issue Links

• links to: GitHub Pull Request #13533