fix(API-1857): Dead link to Event API guide

Fixes #573

Author: LevFlavien

content/getting-started/events-api-best-practices-5x/welcome.md

@@ -2,7 +2,7 @@
 
 This page presents best practices and recommendations you might need while implementing the Events API inside an API based connector.
 
-First, if you need help setting up a connector to use the Events API, look at the [Quick start my first webhook](/getting-started/quick-start-my-first-webhook/welcome.html) guide.
+First, if you need help setting up a connector to use the Events API, look at the [Quick start my first webhook](/getting-started/quick-start-my-first-webhook-5x/welcome.html) guide.
 
 ## Configure your server