Update Codabench-Installation.md

Author: Didayolo

documentation/docs/Developers_and_Administrators/Codabench-Installation.md

@@ -125,7 +125,7 @@ services:
     platform: linux/arm64
   site_worker:
     platform: linux/arm64
-    command: ["celery -A celery_config worker -B -Q site-worker -l info -n site-worker@%n --concurrency=2"]
+    command: celery -A celery_config worker -B -Q site-worker -l info -n site-worker@%n --concurrency=2
   compute_worker:
     platform: linux/arm64
 ```
@@ -151,4 +151,4 @@ Open a [Github issue](https://github.com/codalab/codabench/issues) to find help
 
 ## Online Deployement
 
-For information about online deployment of Codabench, go to the [following page](How-to-deploy-Codabench-on-your-server.md)
+For information about online deployment of Codabench, go to the [following page](How-to-deploy-Codabench-on-your-server.md)