Tidy up first elfhosted blog post

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

scripts/serve-insiders.sh

@@ -4,4 +4,4 @@ docker build --build-arg FROM_SOURCE=ghcr.io/geek-cookbook/mkdocs-material-insid
 docker run --rm --name mkdocs-material -it -p 8123:8000 -v ${PWD}:/docs -e PROD_BUILD=false funkypenguin/mkdocs-material-insiders serve \
     --dev-addr 0.0.0.0:8000 \
     --dirtyreload \
-    --config-file mkdocs-insiders.yml
+    --config-file mkdocs-insiders.yml