fix changes

Author: akshat5302

self-hosting/methods/portainer.mdx

@@ -16,7 +16,7 @@ This guide shows you the steps to deploy a self-hosted instance of Plane using P
 1. **Download the required depoyment files**  
     - `portainer-compose.yml` – Defines Plane's services and dependencies.
         ```bash
-        curl -fsSL https://prime.plane.so/releases/<plane-version>/docker-compose.yml -o portainer-compose.yml
+        curl -fsSL https://prime.plane.so/releases/<plane-version>/portainer-compose.yml -o portainer-compose.yml
         ```
     - `variables.env` – Stores environment variables for your deployment.
         ```bash