fix whitespace

README.md

@@ -42,7 +42,7 @@ Have a look at the `package.json` for more a more detailed view.
 Works great with typescript ecosystem.
 
 ## Basic project structure
-<pre> app
+<pre>app
 |   |-- app.component.html
 |   |-- app.component.scss
 |   |-- app.component.spec.ts					# All tests end with .spec.ts