Change website build from singlehtml to html

.github/workflows/publish-website.yml

@@ -22,13 +22,13 @@ jobs:
       environment_file: 'website/environment.yml'
       environment_name: climsim-docs-env
       path_to_notebooks: 'website'
-      build_command: 'cp -r ../README.md demo_notebooks .; jupyter-book build . --builder singlehtml'
+      build_command: 'cp -r ../README.md demo_notebooks .; jupyter-book build .'
       # this is a bit hacky, but the only way to 'inject' a shell command before the build. 
-      output_path: '_build/singlehtml'
+      output_path: '_build/html'
   deploy:
     needs: build
     #Trying this out to see if the auth problem is fixed
     # uses: ./.github/workflows/deploy-book.yaml #hack until https://github.com/ProjectPythia/cookbook-actions/pull/45 is merged. 
     uses: ProjectPythia/cookbook-actions/.github/workflows/deploy-book.yaml@main
     with:
-      publish_dir: "website/_build/singlehtml"
+      publish_dir: "website/_build/html"

website/CONTRIBUTING.md

@@ -28,7 +28,7 @@ conda activate climsim-docs-env
 and run the following command to build the website locally
 
 ```bash
-jupyter-book build . --builder singlehtml
+jupyter-book build .
 ```
 
-The HTML content will be built in a folder called `_build` and can be viewed by opening the file `_build/singlehtml/index.html` in a browser.
+The HTML content will be built in a folder called `_build` and can be viewed by opening the file `_build/html/index.html` in a browser.