Update collection-index.yml (#523)

* Update collection-index.yml

* Fixed ociReference (=> lowercase)

#523

Author: RouL

_data/collection-index.yml

@@ -961,7 +961,7 @@
   maintainer: David Zucker
   contact: https://github.com/davzucky/devcontainers-features-wolfi/issues
   repository: https://github.com/davzucky/devcontainers-features-wolfi
-  ociReference: ghcr.io/davzucky/devcontainers-features-wolfi  
+  ociReference: ghcr.io/davzucky/devcontainers-features-wolfi
 - name: Additional Dev Container Features by braun-daniel
   maintainer: Daniel Braun
   contact: https://github.com/braun-daniel/devcontainer-features/issues
@@ -977,4 +977,8 @@
   contact: https://github.com/thediveo/devcontainer-features/issues
   repository: https://github.com/thediveo/devcontainer-features
   ociReference: ghcr.io/thediveo/devcontainer-features
-
+- name: devcontainer features by RouL
+  maintainer: Markus Zhang
+  contact: https://github.com/RouL/devcontainer-features/issues
+  repository: https://github.com/RouL/devcontainer-features
+  ociReference: ghcr.io/roul/devcontainer-features