Feedback on /admin/upgrade: Recommendations for recreating tables

### Documentation feedback

- Page title: Upgrading
- Page URL: https://cratedb.com/docs/guide/admin/upgrade/index.html
- Source: https://github.com/crate/cratedb-guide/blob/main/docs/admin/upgrade/index.md

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@seut mentioned something about this discussion that sparked my interest.

> [...] as this is quite interesting for everyone who wants to upgrade [...]

- https://github.com/crate/crate/discussions/18624

@amotl asked:

> Is there anything inside this conversation that would be worth to generalize into a "best practice" document related to "upgrades and migrations", if we don't have it yet? Your teaser text feels like this, and I will be happy to pick this up on one of the next iterations.

@seut responded:

> Yes could be valuable to move this into such a page.