Potential for confusion of @version syntax?

[azaroth42]

The definition of @version says:

[...] available when processing mode has been explicitly set to json-ld-1.1.

I know what this means, but reading it as a newcomer I might be tempted to put the string "json-ld-1.1" as the value of @version rather than just 1.1

I think this should be made clearer in the definition of the keyword?