Add index name

Author: Tom Mitchelmore

.github/workflows/main.yml

@@ -65,3 +65,4 @@ jobs:
           algolia-api-key: ${{ secrets.ALGOLIA_API_KEY }}
           site-url: "https://docs.lumberjack.rareloop.com"
           override-config: false
+          index-name: "Docusaurus"