message: Tersify about page summary; add links
diff: <div class="container about">
  <p>
  - Docs.rs (formerly cratesfyi) is an open source project to host
  - documentation of crates for the Rust Programming Language.
  + Docs.rs (formerly cratesfyi) is an
  + <a href="https://github.com/rust-lang/docs.rs">open source</a>
  + documentation host for crates of the
  + <a href="https://www.rust-lang.org/">Rust Programming Language</a>.
  </p>
  <p>
  