Store URL is outdated

[ryonakano]

What Happened?

Originally reported by @MobileAZN in elementary Community Slack:

The store link at the bottom of the blog post is incorrect.
It points to: https://elementary.io/store/
It should point to: https://store.elementary.io/

I’m not sure if it’s a common footer you paste in, but it does need updating.

Steps to Reproduce

1. Open some blog post, e.g. https://blog.elementary.io/lets-talk-os-8/
2. Scroll down the page to the "Thank you" section
3. Click the cart button
4. It takes you to the 404 page

Expected Behavior

Clicking the cart button should take us to the new store page

OS Version

7.x (Horus)

Software Version

Latest release (I have run all updates)

Log Output

N/A

Hardware Info

Not relevant