Documentation link is dead

[RobbieMcKinstry]

I found a dead link on the Goa website. To reproduce:

1. Follow this link https://goa.design/reference/goa/design/apidsl/#func-oauth2security-a-name-apidsl-oauth2security-a

2. Click the link to Aaron Parecki's blog post.

Note: the URL bar is in Chinese (Japanese?), the Sad Gopher link is broken, and the URL is wacky.

Here's a copy of my URL:
https://goa.design/reference/goa/design/apidsl/a%20href=%22https:/aaronparecki.com/2012/07/29/2/oauth2-simplified%22%3Ehttps:/aaronparecki.com/2012/07/29/2/oauth2-simplified%3C/a

As you can see, the intended URL is concatenated with the base for the application. Assumedly, the intended URL was "https:/aaronparecki.com/2012/07/29/2/oauth2-simplified" but it's prefaced with the API base URL ("https://goa.design/reference/goa/design/apidsl").