docs: update obc documentation
docs: update obc documentation

Remove wrong information from OBC CRD example

Signed-off-by: Jiffin Tony Thottan <ac134a614b50f2e879db85acb9f4b45b24a210dc@gmail.com>

rook/rook,rook/nfs,rook/rook,rook/rook,rook/nfs,rook/rook,rook/rook,rook/nfs