Merge branch 'fix.github.pages' into 'main'

Install relexi as package instead of trying to install requirements via old requirement file.

See merge request flexi/codes/relexi!30

.github/workflows/docs.yml

@@ -24,7 +24,7 @@ jobs:
           python-version: '3.11'
 
       # ADJUST THIS: install all dependencies (including pdoc)
-      - run: pip install -r requirements.txt
+      - run: pip install -e .
       # ADJUST THIS: build your documentation into docs/.
       # We use a custom build script for pdoc itself, ideally you just run `pdoc -o docs/ ...` here.
       - run: cd docs/ && bash build_docs.sh