Add integrations API docs redirects (plus a few others) (#33331)

## Summary & Motivation

Address missing redirects flagged by Anil in
[Slack](https://dagsterlabs.slack.com/archives/C0894SUL7EH/p1768916398226259).

## How I Tested These Changes

## Changelog

> Insert changelog entry or delete this section.

---------

Signed-off-by: nikki everett <nikki@dagsterlabs.com>

Author: neverett