docs(known-instances): update list of known instances (#776)

* docs(known-instances): update list of known instances

Signed-off-by: Lothar Serra Mari <[e-mail]>

* Update metadata

check-spelling run (pull_request) for probably-daily-new-spotted-instances-update

Signed-off-by: check-spelling-bot <[e-mail]>
on-behalf-of: @check-spelling <[e-mail]>

---------

Signed-off-by: Lothar Serra Mari <[e-mail]>
Signed-off-by: check-spelling-bot <[e-mail]>
Co-authored-by: Lothar Serra Mari <[e-mail]>

.github/actions/spelling/expect.txt

···
 metarefresh
 metrix
 mimi
+Minfilia
 minica
 mistralai
 Mojeek

docs/docs/user/known-instances.md

···
 - https://pluralpedia.org/
 - https://git.aya.so/
 - https://marginalia-search.com/
+- https://repositorio.ufrn.br/home/
+- https://mozillazine.org/
 - <details>
   <summary>FreeCAD</summary>
   - https://forum.freecad.org/