README: fix typo and other copedits (#115)

Author: chalin

README.md

@@ -1,7 +1,7 @@
 # The TUF website
 
-Website repository for The Update Framework (TUF), build with [Hugo][] using the
-[Docsy][] theme, hosted on [Netlify][].
+Website repository for The Update Framework (TUF), built with [Hugo] using the
+[Docsy] theme and hosted on [Netlify].
 
 [Docsy]: https://docsy.dev
 [Hugo]: https://gohugo.io