fix: Redirect broken quickstart link to docs index

[callahad]

Some automated onboarding emails included a link to /se2/get-started, which 404's. This commit redirects that URL to the docs index.

The redirect is temporary (307) instead of permanent (308) since I can imagine us actually wanting a page at /se2/get-started in the future.

[vercel[bot]]

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Name	Status	Preview	Updated
docs	✅ Ready (Inspect)	Visit Preview	Dec 1, 2022 at 11:18PM (UTC)

[github-actions[bot]]

4 total issues, 0 errors, and 4 warnings found for docs.suborbital.dev

Details

WARNING WCAG2AA.Principle1.Guideline1_3.1_3_1.H48 ```html

Skip to main content ``` This element has "position: fixed". This may require scrolling in two dimensions, which is considered a failure of this Success Criterion. ---
WARNING WCAG2AA.Principle1.Guideline1_4.1_4_3_F24.F24.FGColour ```html / ``` Check that this element has an inherited background colour or image to complement the corresponding inline foreground colour. ---
WARNING WCAG2AA.Principle1.Guideline1_4.1_4_3_F24.F24.FGColour ```html / ``` Check that this element has an inherited background colour or image to complement the corresponding inline foreground colour. ---

---

📝 docs | :octocat: repo | 🙋🏽‍♀️ issues | 🏪 marketplace | A11yWatch

[github-actions[bot]]

4 total issues, 0 errors, and 4 warnings found for docs.suborbital.dev

Details

WARNING WCAG2AA.Principle1.Guideline1_3.1_3_1.H48 ```html

Skip to main content ``` This element has "position: fixed". This may require scrolling in two dimensions, which is considered a failure of this Success Criterion. ---
WARNING WCAG2AA.Principle1.Guideline1_4.1_4_3_F24.F24.FGColour ```html / ``` Check that this element has an inherited background colour or image to complement the corresponding inline foreground colour. ---
WARNING WCAG2AA.Principle1.Guideline1_4.1_4_3_F24.F24.FGColour ```html / ``` Check that this element has an inherited background colour or image to complement the corresponding inline foreground colour. ---

---

📝 docs | :octocat: repo | 🙋🏽‍♀️ issues | 🏪 marketplace | A11yWatch

[callahad]

Link check failure is unrelated. This appears to work.

$ curl -I 'https://docs-foyh0uvy1-suborbital.vercel.app/se2/get-started'
HTTP/2 307
cache-control: public, max-age=0, must-revalidate
content-type: text/plain
date: Thu, 01 Dec 2022 23:18:48 GMT
location: /
server: Vercel
strict-transport-security: max-age=63072000; includeSubDomains; preload
x-robots-tag: noindex
x-vercel-cache: MISS
x-vercel-id: lhr1::lzz2m-1669936728684-30525cef45d8