Disable link checks for architecture_coarse.svg (#1142)

* Disable link checks for architecture_coarse.svg

* Exclude opensource.org/licenses/BSD-3-Clause

This seems to fail in CI - for whatever reason...

Author: Felix Exner (fexner)

.github/workflows/check_links.yml

@@ -15,5 +15,5 @@ jobs:
         run: |
           .github/helpers/check_urls.sh \
             -d ".git build CMakeModules debian" \
-            -f "package.xml ursim_docker.rst" \
-            -p "vnc\.html"
+            -f "package.xml ursim_docker.rst architecture_coarse.svg" \
+            -p "vnc\.html opensource\.org\/licenses\/BSD-3-Clause"