chore: update docs about CEL expression precedence

updated docs clarifying the predence of CEL expression
over other matching annotations.

Signed-off-by: Zaki Shaikh <[email protected]>

Author: zakisk

docs/content/docs/guide/matchingevents.md

@@ -282,9 +282,10 @@ metadata:
 If you need to do some advanced matching, `Pipelines-as-Code` supports CEL
 expressions to do advanced filtering on the specific event you need to be matched.
 
-If you have the `pipelinesascode.tekton.dev/on-cel-expression` annotation in
-your PipelineRun, the CEL expression will be used and the `on-target-branch` or
-`on-event` annotations will be skipped.
+{{< hint danger >}}
+If you use the `on-cel-expression` annotation in the same pipeline run as an `on-event`, `on-target-branch`, `on-label`, `on-path-change`, or `on-path-change-ignore`
+annotation, the `on-cel-expression` annotation takes priority and Pipelines-as-Code ignores the other annotations.
+{{< /hint >}}
 
 This example will match a `pull_request` event targeting the branch `main`
 coming from a branch called `wip`: