Address PR Comments

Signed-off-by: sblausten <sam@roadie.io>

.changeset/sweet-fans-juggle.md

@@ -3,4 +3,4 @@
 '@backstage/plugin-events-backend': patch
 ---
 
-Adds an optional `EventBroker` for sending an event when there are conflicts, and exports `InMemoryBroker` for use in other plugins.
+Adds an optional `EventBroker` for sending an event when there are conflicts.

plugins/catalog-backend/api-report.md

@@ -115,7 +115,7 @@ export class BuiltinKindsEntityProcessor implements CatalogProcessor_2 {
 }
 
 // @public (undocumented)
-export const CATALOG_CONFLICTS_TOPIC = 'catalog.conflict';
+export const CATALOG_CONFLICTS_TOPIC = 'experimental.catalog.conflict';
 
 // @public
 export class CatalogBuilder {

plugins/catalog-backend/src/constants.ts

@@ -15,4 +15,4 @@
  */
 
 /** @public */
-export const CATALOG_CONFLICTS_TOPIC = 'catalog.conflict';
+export const CATALOG_CONFLICTS_TOPIC = 'experimental.catalog.conflict';