uupdate script to align with website build

pytket/docs/build-docs.sh

@@ -2,10 +2,19 @@ cp -R pytket-docs-theming/_static .
 cp -R pytket-docs-theming/quantinuum-sphinx .
 cp pytket-docs-theming/conf.py .
 
-# Replace unnecessary _tket for all classes and functions
+
+# Get pytket extension version
+PYTKET_VERSION="$(pip show pytket| grep Version | awk '{print $2}')"
+
+PACKAGE="pytket $PYTKET_VERSION"
+
+# Build the docs
+sphinx-build -b html . build -D html_title="$PACKAGE API documentation"
+
+
+# Replace unnecessary _tket for all classes and functions in the built html
 # Apple MACOSX and Linux have differing sed replace syntax
 if [[ "$OSTYPE" == "darwin"* ]]; then
-    sphinx-build -b html . build -D html_title="pytket"
     find build/ -type f -name "*.html" | xargs sed -e 's/pytket._tket/pytket/g' -i ""
     sed -i '' 's/pytket._tket/pytket/g' build/searchindex.js
 else