chore: Switch hint marker to plain > marker

docs/9-platform-engineering/9.1-backstage.md

@@ -79,7 +79,7 @@ a GitHub org to play around with. Each person going through the bootcamp will ne
     - Deep Dive: Apply a custom theme
 4. Push your instance of Backstage to a repo in your new GitHub Organization
 
-  ?> By default, your Backstage instance will be configured to use SQLite to store data in-memory. If you would like your instance's data to be stored to your disc, you can specify a folder in your `app-config.yaml` as follows:
+> By default, your Backstage instance will be configured to use SQLite to store data in-memory. If you would like your instance's data to be stored to your disc, you can specify a folder in your `app-config.yaml` as follows:
   ```  database:
     client: better-sqlite3
     # sqlite is configured by default to store in-memory