Stable release links to developer documentation

The stable release is linking to the developer branch documentation.

This means incorrect documentation is visible for features that don't exist in the stable release. Admins are then confused as to why the features don't exist, and spend more than three hours trying to research the issue. Ask me how I know.

Here are the two links to the wrong documentation

To replicate:

• Visit (tld)/pleroma/admin/#/settings/instance
• "see documentation", the link in the top right corner, goes to https://docs-develop.pleroma.social/backend/administration/CLI_tasks/config/