docs(known-instances): Add Duke University, coinhoards.org (and myself) to known instances (#757)

* docs(known-instances): add Duke University to known instances

Signed-off-by: Lothar Serra Mari <mail@serra.me>

* docs(known-instances): add fabulous.systems to known instances

Signed-off-by: Lothar Serra Mari <mail@serra.me>

* docs(known-instances): add coinhoards.org to known instances

Signed-off-by: Lothar Serra Mari <mail@serra.me>

* chore(spelling): exempt the known instances page

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Lothar Serra Mari <mail@serra.me>
Signed-off-by: Xe Iaso <me@xeiaso.net>
Co-authored-by: Xe Iaso <me@xeiaso.net>

.github/actions/spelling/excludes.txt

@@ -84,6 +84,7 @@
 ^\Q.github/workflows/spelling.yml\E$
 ^data/crawlers/
 ^docs/blog/tags\.yml$
+^docs/docs/user/known-instances.md$
 ^docs/manifest/.*$
 ^docs/static/\.nojekyll$
 ^lib/policy/config/testdata/bad/unparseable\.json$

docs/docs/user/known-instances.md

@@ -46,6 +46,8 @@ This page contains a non-exhaustive list with all websites using Anubis.
 - https://wiki.koha-community.org/
 - https://extensions.typo3.org/
 - https://ebird.org/
+- https://fabulous.systems/
+- https://coinhoards.org/
 - <details>
   <summary>FreeCAD</summary>
   - https://forum.freecad.org/
@@ -83,3 +85,10 @@ This page contains a non-exhaustive list with all websites using Anubis.
   - https://karla.hds.hebis.de/
   - and many more (see https://www.hebis.de/dienste/hebis-discovery-system/)
   </details>
+- <details>
+  <summary>Duke University</summary>
+  - https://repository.duke.edu/
+  - https://archives.lib.duke.edu/
+  - https://find.library.duke.edu/
+  - https://nicholas.duke.edu/
+  </details>