Mark USE_X_ACCEL as true in docs

src/server/administer/environment.md

@@ -102,7 +102,7 @@ Other settings related to data management.
 | `LOCKFILE_EXPIRATION`        | integer | `300`       | Time in seconds for a project being locked while updated. If no change happens to the project in such time, the lockfile is removed.    |
 | `MAX_CHUNK_SIZE`             | integer | `10485760`  | Maximum size of file chunk to be uploaded (and received by server) in bytes. |
 | `MAX_DOWNLOAD_ARCHIVE_SIZE`  | integer | `1073741824`| Maximum size of project zip archive in bytes for direct download. Too large projects may take too long to download or never complete in one request. |
-| `USE_X_ACCEL` ⭐️             | Boolean | `false`     | Whether to use nginx to serve files. Should be enabled if used with nginx proxy for performance reasons. Read more [here](https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/). |
+| `USE_X_ACCEL` ⭐️             | Boolean | `true`     | Whether to use nginx to serve files. Should be enabled if used with nginx proxy for performance reasons. Read more [here](https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/). |
 | `CLOSED_ACCOUNT_EXPIRATION`  | integer | `1`         | Time in days after a user closed their account to all projects and files are permanently deleted. Please note that until the user is removed, the username/email is occupied. |
 | `DELETED_PROJECT_EXPIRATION` | integer| `7`        | Lifetime in days for deleted projects. Expired projects are removed permanently without possibility to restore afterwards. |
 | `PROJECT_ACCESS_REQUEST`     | integer | `604800`    | Lifetime of active project access request in seconds. |