Reorder APIs on the sidebar (#1122)

Since it is not in alphabetical order anyway, as far as I know "Polkadart" should be before "Polkadot-API"

Dart, comes before TypeScript, Python comes before TypeScript, and so on, but it seems the only "error" is that Dedot is listed first. 

If you don't mind us making this change @sinzii ? I really appreciate all your hard work.

Author: leonardocustodio

develop/toolkit/api-libraries/.nav.yml

@@ -1,8 +1,8 @@
 title: API Libraries
 nav:
   - index.md
-  - ':simple-typescript: Dedot': dedot.md
   - ':simple-typescript: Polkadot-API': papi.md
+  - ':simple-typescript: Dedot': dedot.md
   - ':simple-javascript: Polkadot.js API': polkadot-js-api.md
   - ':simple-dart: Polkadart': polkadart.md
   - ':simple-python: Python Substrate Interface': py-substrate-interface.md