chore: fixed indentation (#2618)

## Description 

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- Fixed indentation for Docker auto-update

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## Checklist

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- [ ] Checked for Grammarly suggestions.
- [ ] Adhered to the writing checklist.
- [ ] Adhered to the media checklist.
- [ ] Verified and updated cross-references or added redirect rules.
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---------

Co-authored-by: Goutham Pratapa <[email protected]>

website/docs/getting-started/setup/instance-management/maintenance-window.md

@@ -19,21 +19,20 @@ Follow the below steps to schedule automatic updates for Appsmith Docker install
    ```
 2. Open the `docker-compose.yml` file and add the below code block after the `restart` attribute in the `appsmith` service. Note that you must add a 6 space-separated fields cron expression, not the traditional 5 space-separated fields to the `command` attribute. See the [CRON Expression Format](https://pkg.go.dev/github.com/robfig/[email protected]#hdr-CRON_Expression_Format) section to learn more. Based on the specified cron expression, watchtower updates Appsmith at the stipulated time whenever a new version becomes available.
 
-   ```yaml
+  ```yaml
        labels:
          com.centurylinklabs.watchtower.enable: "true"
-    auto_update:
-      image: containrrr/watchtower
-      volumes:
-        - /var/run/docker.sock:/var/run/docker.sock
-      # Update check interval in seconds.
-      #highlight-next-line
-      command: --schedule "0 0 * ? * *" --label-enable --cleanup
-      restart: unless-stopped
-      depends_on:
-        - appsmith
-      environment:
-        - WATCHTOWER_LIFECYCLE_HOOKS=true
+     auto_update:
+       image: containrrr/watchtower
+       volumes:
+         - /var/run/docker.sock:/var/run/docker.sock
+         # Update check interval in seconds.
+       command: --schedule "0 0 * ? * *" --label-enable --cleanup
+       restart: unless-stopped
+       depends_on:
+         - appsmith
+       environment:
+         - WATCHTOWER_LIFECYCLE_HOOKS=true
    ```
 
   The above 6 space-separated fields cron expression `0 0 * ? * *` means that the task runs every day of every month, regardless of the day of the week or year, at midnight (0:00). You can change the schedule, adjust the cron expression accordingly. If you wish to update Appsmith immediately, you can opt for a manual update and follow the steps in the [Update Appsmith](/getting-started/setup/instance-management/update-appsmith/#update-on-docker) guide.