Merge #343

343: Demote sorted search to level 3 heading r=brunoocasali a=ellnix

Just something I noticed while editing `README.md`: `## Sorted search` seems to logically belong under `## Custom search` but it has the same level of heading (and does not have its place in the TOC).

Co-authored-by: ellnix <103502144+ellnix@users.noreply.github.com>

README.md

@@ -230,7 +230,7 @@ harry_book.formatted # => {"id"=>"1", "name"=>"<em>Harry</em> Potter", "descript
 👉 Don't forget that `attributes_to_highlight`, `attributes_to_crop`, and
 `crop_length` can be set up in the `meilisearch` block of your model.
 
-## 🔍 Sorted search
+### 🔍 Sorted search
 
 As an example of how to use the sort option, here is how you could achieve
 returning all books sorted by title in ascending order: