Docs theme latest (#4179)

* docs: remove specs, they live in spec repo (#4172)

* docs: remove specs, they live in spec repo

- moving specs to spec repo
- https://github.com/tendermint/spec/pull/62 PR for updating them

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* add makefile command to copy in sepcs from specREPO

- move cloning of spec repo to pre and post scripts

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

docs/.vuepress/config.js

@@ -1,5 +1,6 @@
 module.exports = {
   theme: "cosmos",
+  title: "Tendermint",
   // locales: {
   //   "/": {
   //     lang: "en-US"