Fix ociReference formatting in collection-index.yml

Author: chrisdemers

_data/collection-index.yml

@@ -1475,7 +1475,7 @@
   maintainer: nkdui
   contact: https://github.com/nkdui/devcontainer-features/issues
   repository: https://github.com/nkdui/devcontainer-features
-  ociReference: ghcr.io/nkdui/devcontainer-features<
+  ociReference: ghcr.io/nkdui/devcontainer-features
 - name: Keeper Secrets Manager (KSM) Dev Container Features
   maintainer: cdsolinfo
   contact: https://github.com/cdsolinfo/devcontainer-features/issues