docs: add explorer example for advanced `sortFn` (#564)
* Added doc example to explorer sortFn
* Prettier fixed formatting
* Let Prettier fix the formatting of the entire markdown file
* Updated example
* Added extra commentary and fixed example
* Update docs/features/explorer.md
* doc fixes
* docs: remove leftover TODO
* docs: move example to `advanced`
---------
Co-authored-by: Sidney <85735034+Epicrex@users.noreply.github.com>
Co-authored-by: Jacky Zhao <j.zhao2k19@gmail.com>
Co-authored-by: Ben Schlegel <ben5.schlegel@gmail.com>
