- Fixed a part of Block's doc ; more work to be done on that part

- Fixed whitespaces from unprinted block parts
- Reworked a bit the UrlExtension route grabbing part

docs/02-control-structure-view-include-block.md

@@ -96,9 +96,9 @@ You can do so by using `define` and `slot`.
 ```html
 {% arguments string $name, string $anchor, int $index = 0 %}
 
-{% define slot %}
+{% define "attributes" %}
 
-<a {% slot "attributes" %}href="{{ $anchor }}" tabindex="{{ $index }}"{% endslot %}>{{ $name }}"</a>
+<a {% slot "attributes" %}{% endslot %} href="{{ $anchor }}" tabindex="{{ $index }}"{% endslot %}>{{ $name }}"</a>
 ```
 
 **[HTML]** Would render the same as the `view` example :