build docs to /docs/build instead of /docs/build/html

This should fix the Jenkins pipeline for publishing documentation

build-docs.sh

 pip install sphinx-autodoc2 sphinx_rtd_theme myst-parser
 
-cd docs/source || exit 1
-make html
+cd docs || exit 1
+sphinx-build source build

docs/source/conf.py

@@ -31,8 +31,7 @@ html_theme_options = {
 html_css_files = ['custom.css']
 html_logo = 'static/geant_logo_white.svg'
 
-# Both the class' and the __init__ method's docstring
-# are concatenated and inserted.
+# Both the class' and the __init__ method's docstring are concatenated and inserted.
 autoclass_content = 'both'
 autodoc_typehints = 'none'