fix/ README typo (e2e chapter)

Author: Maxime GRIS

Diff for: README.md

@@ -84,7 +84,7 @@ YES! You can do it! Just by importing your library in npm dependencies section (
 Maybe you want to execute the application in the browser with hot reload ? Just run `npm run ng:serve:web`.
 **Note that you can't use Electron or NodeJS native libraries in this case.** Please check `providers/electron.service.ts` to watch how conditional import of electron/Native libraries is done.
 
-# E2E Testing
+## E2E Testing
 
 E2E Test scripts can be found in `e2e` folder.