Periodicals corpus: update metadata #1835
Description
The Periodicals corpus on I-analyzer contains the 19th century UK periodicals corpus from Gale.
The title "Periodicals" is too vague, especially when this is not the only "periodicals" corpus. Same for the description.
Also, the info page for the corpus contains some dead links that should be updated. (Cf. the updated links for ECCO in #1806)