Add link to FAQ about adding a denomination in FAQ about adding a currency

When we requesting the creation or the modification of a currency or denomination in the catalogue, the system has a link to FAQ about add or modify a currency https://en.numista.com/help/add-or-modify-a-currency-in-the-catalogue-194.html

 but here we can not access to FAQ about add or modify a denomination https://en.numista.com/help/add-or-modify-a-denomination-in-the-catalogue-206.html

In the case of a mint, the FAQ about add or modify it https://en.numista.com/help/add-or-modify-a-mint-in-the-catalogue-189.html has a link to the FAQ about add or modify a mark https://en.numista.com/help/add-or-modify-a-mark-in-the-catalogue-201.html

I think that adding a new section in https://en.numista.com/help/add-or-modify-a-currency-in-the-catalogue-194.html with a link to https://en.numista.com/help/add-or-modify-a-denomination-in-the-catalogue-206.html is useful. For example:

How to add a missing denomination to a currency?

See the instructions here.