secrets.development.example.yml in shipit-engine-0.39.0

- old
+ new

@@ -1,8 +1,8 @@
 host: 'localhost:3000'
 redis_url: 'redis://127.0.0.1:6379/0'
 
-# For creating an app see: https://github.com/Shopify/shipit-engine/blob/master/docs/setup.md#creating-the-github-app
+# For creating an app see: https://github.com/Shopify/shipit-engine/blob/main/docs/setup.md#creating-the-github-app
 # Can be obtained there: https://github.com/settings/apps
 # Set the "Authorization callback URL" as `<host>/github/auth/github/callback`
 
 github:
   app_id: