Translate index.mdx (to ES) and add Spanish models to quicktour.mdx examples (#16685)

* Change nits in Spanish for quicktour.mdx

- Add tasks names in English too.
- Fix small nits in Spanish

* Translate index.mdx to Spanish

* Translate body of index.
* Translated the compatible models list (not the papers´ names). Since this should not be updated manually, I can come back to the original text.

* Add models and a  dataset for Spanish in the code exmaples

* Replaced the English models to Spanish versions.

* Add index to _toctree.yml and fix Spanish

* Fix double ““ error

* Change negative example in ASR example

* make style

* Debug style in quicktour.mdx

docs/source/es/_config.py

@@ -10,5 +10,5 @@ notebook_first_cells = [{"type": "code", "content": INSTALL_CONTENT}]
 black_avoid_patterns = {
     "{processor_class}": "FakeProcessorClass",
     "{model_class}": "FakeModelClass",
-    "{object_class}": "FakeObjectClass",    
+    "{object_class}": "FakeObjectClass",
 }