Add Jamie Tanna's blog post(s) to our User Stories

[HonkingGoose]

Describe the proposed change(s).

Jamie Tanna's blog, Lessons learned self-hosting Renovate is a good article! I would like to have it in our User Stories section of the docs.

@jamietanna offered to create a PR to add it to our docs. So here's an issue to remind them of this work. 😄

They also offered to write about their experiences with other companies, to be included as User Stories at a later time.

I can not assign @jamietanna to this issue yet. But I think I can assign you after you comment on the issue. So can you post a comment on this issue? 😉

Todos:

• Read the Renovate style guide
• Edit content so it matches the style guide
• Open PR with blog post(s) content
• Ask @HonkingGoose for review
• Apply review suggestions
• Get approving reviews
• Merge
• Done