Add The Nefarious Developer devcontainers to index (#490)

* add the nefarious developer devcontainers to index

* refactor: set oci reference in lower case

Change request by @Kaniska244 to avoid issues with the ORAS spec

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Co-authored-by: Álvaro Rausell Guiard <[email protected]>

Author: NickChecan

_data/collection-index.yml

@@ -966,6 +966,12 @@
   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  
+- name: Nefarious Development Containers
+  maintainer: NickChecan
+  contact: https://github.com/The-Nefarious-Developer/devcontainer-templates/issues
+  repository: https://github.com/The-Nefarious-Developer/devcontainer-templates
+  ociReference: ghcr.io/the-nefarious-developer/devcontainer-templates
   ociReference: ghcr.io/davzucky/devcontainers-features-wolfi
 - name: Dev Container Features by ForWarD Software
   maintainer: ForWarD Software