Auto merge of #9795 - johnthagen:patch-2, r=ehuss

Render build-std web links as hyperlinks

Several hyperlinks in the unstable docs page are not rendered properly as links when the documentation is built. This PR addresses this.

<img width="622" alt="Screenshot 2021-08-16 201532" src="https://user-images.githubusercontent.com/10340167/129644467-2c8ec535-3d44-497e-8fba-d8364b794faf.png">