Fix Gitstalk URL

Author: fthomas

README.md

@@ -32,7 +32,7 @@ look like, here are the ones it has created so far:
 * [Merged pull requests]( https://github.com/search?q=author%3Ascala-steward+is%3Amerged+sort%3Aupdated-desc&type=pullrequests)
   ([compact](             https://github.com/pulls?q=author%3Ascala-steward+is%3Amerged+sort%3Aupdated-desc))
 
-You can also watch what it is currently doing [here](https://gitstalk.netlify.com/scala-steward).
+You can also watch what it is currently doing [here](https://gitstalk.netlify.app/scala-steward).
 
 ## Wanna have a badge?