improve documentation

Fix multiple typos in the internal documentation

Improve visual aspect and redaction

README.md

@@ -34,6 +34,8 @@
     - [build-for-arm](./docs/user/build-for-arm.md)
     - [rpc](./docs/user/rpc.md)
     - [smith](./docs/user/smith.md)
+- [end2end-tests](./end2end-tests/) automated end to end tests written with cucumber 
+- [live-tests](./live-tests/) sanity checks to test the storage of a live chain 
 
 ## Use