Added check for dead links and fixed dead links

.github/workflows/gh-pages.yml

@@ -67,3 +67,12 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v1
+
+  check:
+    runs-on: ubuntu-latest
+    needs: deploy
+    steps:
+      - name: Setup Node
+        uses: actions/setup-node@v3
+      - run: npm install linkinator
+      - run: npx linkinator https://flightcontrol-master.github.io/MOOSE/ --recurse

docs/_config.yml

@@ -1,3 +1,5 @@
+baseurl: ""
+url: "https://flightcontrol-master.github.io/MOOSE/"
 repository: FlightControl-Master/MOOSE
 title: MOOSE
 description: MOOSE is a Mission Object Oriented Scripting Environment for mission designers in DCS World

docs/buildsystem/build-docs.md

@@ -56,7 +56,7 @@ Main build steps to create the class documentation are defined in [.github/workf
     - Copy build result to `MOOSE_DOCS` folder.
     - Push results to the target repository.
 
-[tree]: https://www.cyberciti.biz/faq/linux-show-directory-structure-command-line/
+[tree]: https://wiki.ubuntuusers.de/tree/
 [LuaDoc]: https://keplerproject.github.io/luadoc/
 [LuaDocumentor]: https://luarocks.org/modules/luarocks/luadocumentor
 [Applevangelist/luadocumentor]: https://github.com/Applevangelist/luadocumentor/tree/patch-1

docs/buildsystem/build-includes.md

@@ -35,7 +35,7 @@ Main build steps to create the include files are defined in [.github/workflows/b
     - Push results to [MOOSE_INCLUDE] repository
 
 [.github/workflows/build-includes.yml]: https://github.com/FlightControl-Master/MOOSE/blob/master/.github/workflows/build-includes.yml
-[tree]: https://www.cyberciti.biz/faq/linux-show-directory-structure-command-line/
+[tree]: https://wiki.ubuntuusers.de/tree/
 [lua5.3]: https://www.lua.org/manual/5.3/
 [LuaRocks]: https://luarocks.org/
 [LuaCheck]: https://github.com/mpeterv/luacheck