doc: added a new documentation for event filters (#300)

* doc: added a new documentation for event filters

* removed typos from the event filter doc and formatted it better.

* made new changes

- moved the eventfilter doc to the guides section
- linked the old eventfilter doc to the new one

* updated the eventfilter doc based on the requested changes

Author: Chigala

docs/documentation/concepts/triggers/events.mdx

@@ -107,6 +107,8 @@ client.defineJob({
 
 They are declarative pattern-matching rules, modeled after [AWS EventBridge patterns](https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-event-patterns.html).
 
+Here's a more detailed explanation of [Event filters](/documentation/guides/event-filter)
+
 Given the following custom event payload:
 
 ```json