✏ Re-word and clarify docs for extra info in body-fields (#1299)

* Fixed Typo in [EN] tutorial: body-fields
- remove duplicate of examples text

* ✏️ Re-word and clarify extra info docs

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

docs/en/docs/tutorial/body-fields.md

@@ -39,7 +39,7 @@ You can then use `Field` with model attributes:
 
 You can declare extra information in `Field`, `Query`, `Body`, etc. And it will be included in the generated JSON Schema.
 
-You will learn more about it later to declare examples examples.
+You will learn more about adding extra information later in the docs, when learning to declare examples.
 
 ## Recap