[ARROW-15937] [Website] Direct Flight SQL subproject page to main docs after 8.0.0 release

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.0.0
• Component/s: Website
• External issue URL: https://github.com/apache/arrow/issues/31364
• Assignee: David Li
• Reporter: David Li
• Created: 15/Mar/22 00:22
• Updated: 11/Jan/23 11:40
• Resolved: 12/May/22 20:03

Description

ARROW-15721 added a subproject page for Flight SQL pointing at https://arrow.apache.org/docs/dev/ (because the page does not yet exist in the regular docs). After 8.0.0 we should link to the stable docs instead.