[docs] Spanish translation of tokenizer_summary.md (#31154)

* add tokenizer_summary to es/_toctree.yml

* add tokenizer_summary to es/

* fix link to Transformes XL in en/

* translate until Subword tokenization section

* fix GPT link in en/

* fix other GPT link in en/

* fix typo in en/

* translate the doc

* run make fixup

* Remove .md in Transformer XL link

* fix some link issues in es/

* fix typo

docs/source/es/_toctree.yml

@@ -92,6 +92,8 @@
     title: Lo que 🤗 Transformers puede hacer
   - local: tasks_explained
     title: Como los 🤗 Transformers resuelven tareas
+  - local: tokenizer_summary
+    title: Descripción general de los tokenizadores
   - local: attention
     title: Mecanismos de atención
   - local: pad_truncation