chore: update wording of new param (#2185)

Author: cabljac

firestore-bigquery-export/extension.yaml

@@ -209,8 +209,8 @@ params:
   - param: LOG_FAILED_EXPORTS
     label: Enable logging failed exports
     description: >-
-      If enabled, the extension will export what failed to enqueue to the
-      Firebase console, to mitigate data loss.
+      If enabled, the extension will log event exports that failed to enqueue to
+      Cloud Logging, to mitigate data loss.
     type: select
     options:
       - label: Yes