Update build commands.

Author: joaander

.readthedocs.yaml

@@ -5,5 +5,7 @@ build:
     - mkdir -p bin
     - curl -sSL "https://github.com/rust-lang/mdBook/releases/download/v0.4.37/mdbook-v0.4.37-x86_64-unknown-linux-gnu.tar.gz" | tar -xvz --directory "bin"
     - mkdir -p $READTHEDOCS_OUTPUT/html
+    - awk '/<div id="sidebar-resize-handle"/{print "<div id=\"furo-sidebar-ad-placement\" class=\"flat\" data-ea-publisher=\"readthedocs\" data-ea-type=\"readthedocs-sidebar\" data-ea-manual=\"true\"></div>"} 1' doc/theme/index.hbs > index.hbs
+    - mv index.hbs doc/theme
     - echo "site-url = \"/$READTHEDOCS_LANGUAGE/$READTHEDOCS_VERSION/\"" >> doc/book.toml
     - bin/mdbook build doc --dest-dir=$READTHEDOCS_OUTPUT/html