Fix arkade download in post

Signed-off-by: Alistair Hey <alistair@heyal.co.uk>

Author: Waterdrips

_posts/2020-10-28-puppeteer-scraping.md

@@ -76,7 +76,7 @@ For the impatient, our [arkade tool](https://get-arkade.dev) can get you up and
 
 ```bash
 # Get arkade, and move it to $PATH
-curl -sLS https://get-arkade.dev | sh
+curl -sLS https://dl.get-arkade.dev | sh
 sudo mv arkade /usr/local/bin/
 
 # Run Kubernetes locally