Complete documentation for 3.11.0 (#3464)

* 🧍 update contributor and sponsor list

* 🚧 document BJData format

* 🚧 document BJData format

* 📡 clarified documentation of [json.exception.parse_error.112]

* ✏️ adjust titles

* 📡 add more examples

* 🎓 adjust warnings for index.md files

* 📡 add more examples

* 🦚 remove example for deprecated code

* 📡 add missing enum entry

* 📡 overwork table for binary formats

* ✅ add test to create table for binary formats

* 📡 fix wording in example

* 📡 add more examples

* Update iterators.md (#3481)

* ✨ add check for overloads to linter #3455

* 🧍 update contributor list

* 📡 add more examples

* 📡 fix documentation

* 📡 add more examples

* 🚶 fix indentation

* 🦚 remove example for destructor

* 📡 overwork documentation

* Updated BJData documentation, #3464 (#3493)

* update bjdata.md for #3464

* Minor edit

* Fix URL typo

* Add info on demoting ND array to a 1-D optimized array when singleton dimension

Co-authored-by: Chaoqi Zhang <prncoprs@163.com>
Co-authored-by: Qianqian Fang <fangqq@gmail.com>

docs/mkdocs/docs/api/basic_json/operator[].md

@@ -198,6 +198,8 @@ Strong exception safety: if an exception occurs, the original value stays intact
 
 ## See also
 
+- documentation on [unchecked access](../../features/element_access/unchecked_access.md)
+- documentation on [runtime assertions](../../features/assertions.md)
 - see [`at`](at.md) for access by reference with range checking
 - see [`value`](value.md) for access with default value