Update data-flow.mdx

Co-authored-by: Mark Story <[email protected]>

Author: aldy505

develop-docs/self-hosted/data-flow.mdx

@@ -79,7 +79,7 @@ graph LR
 ### Event Ingestion Pipeline
 
 1. Events from the SDK is sent to the `relay` service.
-2. Relay parses the incoming envelope, validates whether the DSN and Project ID is valid. It reads project config data from `redis`.
+2. Relay parses the incoming envelope, validates whether the DSN and Project ID are valid. It reads project config data from `redis`.
 3. Relay build a new payload to be consumed by Sentry ingest consumers, and send it to `kafka`.
 4. Sentry `ingest-*` consumers ( with `*` [wildcard] being the event type [errors, transaction, profiles, etc]) consumes the event, cache it in `redis` and start the `preprocess_event` task.
 5. The `preprocess_event` task symbolicate stack traces with `symbolicator` service, and process event according to the event type's logic.