Tersify about page summary; add links

Author: Havvy

templates/about.hbs

@@ -2,8 +2,10 @@
 
 <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>