dc:title should be array of language-alternative

The definition of dc:title should follow the dublin core standard, which is an array of locale-specific strings (type language-alternative). See asset.schema.json for an example:
https://github.com/adobe/xdm/blob/master/schemas/assets/asset.schema.json#L198-L204

https://github.com/adobe/xdm/blob/b73ceb6002ce5ad3292fecc2443ad7954a87c537/schemas/content/componentized-page.schema.json#L53-L55

Inspect the affected dc:title definition and compare it with the language-alternative example in schemas/assets/asset.schema.json, then review the corresponding definition in schemas/content/componentized-page.schema.json. Done means dc:title follows the Dublin Core standard as an array of locale-specific strings.

Written by the indexing model from the issue text.