Network OnetoMany docs

[Davide-Bianchi]

In network.OneToManyLinking() the doc is confusing. In particular A must be mispelled with B in this sentence:
Consider a MultiIndex with record pairs constructed from datasets A
and B. To link a record from B to at most one record of B, use the
following syntax:
> one_to_many = OneToManyLinking(0)
> one_to_many.compute(links)
To link a record from B to at most one record
of B, use:
> one_to_many = OneToManyLinking(1)
> one_to_many.compute(links)