feat(doc): fluidattacks#1328 update github actions example

- Update the GitHub Actions example in the Getting
Started guide to show the use of
`chown -R root:root /github/workspace`

Signed-off-by: Robin Quintero <rohaquinlop301@gmail.com>

.github/workflows/dev.yml

@@ -62,7 +62,7 @@ jobs:
       - uses: docker://docker.io/nixos/nix@sha256:c3db4c484f6b1ee6c9bb8ca90307cfbeca8ef88156840911356a677eeaff4845
         name: /dev/example
         with:
-          args: sh -c "chown -R root:root /github/workspace && nix-env -if . && m . /dev/example"
+          args: nix-env -if . && m . /dev/example
   macos_dev_example:
     runs-on: macos-latest
     steps:

docs/src/getting-started.md

@@ -88,9 +88,17 @@ Example:
           - uses: docker://ghcr.io/fluidattacks/makes/amd64:24.02
             name: helloWorld
             with:
-              args: m . /helloWorld 1 2 3
+              args: sh -c "chown -R root:root /github/workspace && nix-env -if . && m . /helloWorld 1 2 3"
     ```
 
+    ???+ note
+
+        We use `chown -R root:root /github/workspace` to change the ownership
+        of the `/github/workspace` directory to the root user and group.
+
+        This is necessary because GitHub Actions runs each job in a new instance of a virtual
+        environment and assigns the `runner` user as the owner of the workspace directory.
+
 === "GitLab CI"
 
     ```yaml