Adjust mv command to work for an already existing target folder.

.gitlab-ci.yml

@@ -75,7 +75,7 @@ pages:
   - pip install -U sphinx sphinx-autoapi sphinx_rtd_theme myst-parser # sphinx_panels
   - cd docs
   - make html
-  - mv build/html/ ../public
+  - mv build/html/* ../public/
   artifacts:
     paths:
     - public