helm: rename `traceeConfig` to `traceeConfigFile`

[josedonizetti]

There has been some confusion around traceeConfig option on the helm values, the idea behind it is to allow the user to inject a full config file, using helm --set-file, when configuring individual values, we can use https://github.com/aquasecurity/tracee/blob/main/deploy/helm/tracee/values.yaml#L61.

So, let's rename it to traceeConfigFile and add a comment explaining it on the values.yaml