Switch to library-documentation-action-v2 (#24)

mkdocs-material no longer has a separate insiders version,
so we no longer need a separate insiders build of the
documentation action.

Author: SeanTAllen

.github/workflows/generate-documentation.yml

@@ -21,7 +21,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/ponylang/library-documentation-action-v2-insiders:release
+      image: ghcr.io/ponylang/library-documentation-action-v2:release
     steps:
       - name: Checkout
         uses: actions/checkout@v4.1.1

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
     needs:
       - pre-artefact-creation
     container:
-      image: ghcr.io/ponylang/library-documentation-action-v2-insiders:release
+      image: ghcr.io/ponylang/library-documentation-action-v2:release
     steps:
       - name: Checkout
         uses: actions/checkout@v4.1.1