docs: remove command-r-16k from model list (404 on on-demand)

Author: fede-kamel

fern/pages/deployment-options/oracle-cloud-infrastructure-oci.mdx

@@ -28,7 +28,6 @@ The following Cohere models are available on OCI Generative AI:
 **Chat models (V1 API via `OciClient`):**
 - Command R+ 08-2024 (`command-r-plus-08-2024`)
 - Command R 08-2024 (`command-r-08-2024`)
-- Command R 16K (`command-r-16k`)
 
 **Embedding models (both clients):**
 - Embed v4 (`embed-v4.0`)