fixup vmagent indentation

Co-authored-by: ldecarvalho-doc <[email protected]>

Author: Mocramis

pages/instances/troubleshooting/filling-memory-and-gpu-metrics-on-the-cockpit-dashboard.mdx

@@ -27,14 +27,18 @@ The scaleway-vmagent service is either:
     ```bash
     systemctl status scaleway-vmagent
     ```
-- if missing install the `scaleway-vmagent` package:
+- if missing, install the `scaleway-vmagent` package:
+
     For Ubuntu: Check that the [Scaleway PPA ](https://launchpad.net/~scaleway/+archive/ubuntu/stable) is present before installing:
+
     ```bash
     sudo add-apt-repository ppa:scaleway/stable
     sudo apt update
     sudo apt install scaleway-vmagent
-
+    ```
+    
     For RHEL-based distributions: check that the [Scaleway COPR repository](https://copr.fedorainfracloud.org/coprs/g/scaleway/stable/) before installing:
+
     ```
     dnf copr enable @scaleway/instance
     dnf install scaleway-vmagent