Make packages/medusa/src/api/routes/store/returns pass linting

In an effort to improve our code quality we want to make sure that all files in the repo pass linting.

Please see this guide for a step-by-step guide for how to complete this task: https://medusajs.notion.site/Linting-routes-challenge-80bdf849c27a4d65baf9d397544d4a60

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Chore

Describe the chore

There is basic titles and descriptions missing from many pages in www and web.

folders for these sites are:
www
web

an example of how we can improve

the supabase.io/support page has the following:
<img width="1178" alt="Screenshot 2021-11-08 at 15 45 55" src="https://user-images.githubusercontent.com/8291514/140702956-ef7a3b26-717a-410c-a3cf-