Story: As a user I want to link the Item to the corresponding Wikipedia Article.

Workflow: I must select the language of the Wikipedia I want to link; then I add the page title.

Problem: The wording is ambiguous. It uses "Site" (Which refers to a whole website, like German Wikipedia) and "Page" (Which refers to a single page, like an article). While these terms are technically correct, they are unlikely to match what users call the things that should put in there.

Suggestion:
Using more descriptive titles, that directly suggestion what can be put in. This may be
language and article name