Still mentions "GIMP Plugin Registry" as if it were active
The Scripting (https://docs.gimp.org/2.10/en/gimp-scripting.html#gimp-concepts-plugins) page says:
In addition to the plugins included with GIMP , many more are available on the net. A large number can be found at the GIMP Plugin Registry [GIMP-REGISTRY], a web site whose purpose is to provide a central repository for plugins. Creators of plugins can upload them there; users in search of plugins for a specific purpose can search the site in a variety of ways.
(And there are more mentions of the registry in the rest of the section, too.)
And the bibliography entry is:
[GIMP-REGISTRY] GIMP-Plugin Registry. http://registry.gimp.org .
... but that domain doesn't even resolve anymore. The last archived version, (https://web.archive.org/web/20180625123802/http://registry.gimp.org:80/), leaves me wondering if the maintainers actually had become "aware that something evil was there", too, so I'm not really sure what changes would be best.
Regardless, just referencing a dead domain as if it were still alive is not ideal, especially since it's under gimp.org: this gives the impression that you broke your own docs (even if the people maintaining the documentation are actually quite distinct from the people who decided to take that domain offline).
P.S. Am I the only one who finds it odd that C-based plugins are described in a chapter called "Scripting", and that https://docs.gimp.org/2.10/en/gimp-scripting.html does not even end up containing any of the sections that are actually about scripting?