feat(docs): Add section for Github actions in testing page (#664)

Co-authored-by: Andrew <[email protected]>
Co-authored-by: Raghd Hamzeh <[email protected]>

docs/content/modeling/testing-models.mdx

@@ -166,6 +166,32 @@ $ fga model test --tests docs.fga.yaml
 ⅹ ListObjects(user=user:peter,relation=admin,type=organization, context=&map[current_time:2024-02-01T00:10:00Z]): expected=[organization:acm], got=[organization:acme], error=<nil>
 ```
 
+## Running tests using GitHub Actions
+
+Use the [OpenFGA Model Testing Action](https://github.com/marketplace/actions/openfga-model-testing-action) to run tests from CI/CD flows in GitHub.
+
+Set the path to the `.fga.yaml` file as the `store-file-path` parameter when configuring the action:
+
+```yaml
+name: Test Action
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    name: Run test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: openfga/[email protected]
+        with:
+          store-file-path: ./example/model.fga.yaml
+
+```
+
 ## Related Sections
 
 <RelatedSection