I don't think so since the sample key they present in the big image contains many of these. The caption is "An example API key generated by github.com/gofrs/uuid and encoded with github.com/agentstation/uuidkey." - so something is wrong.
You need to look harder at the encoding standard. After generation all o are mapped to 0 and all l are mapped to 1 so yes there are 0 and 1 but there are never o and l.
