Search parameters response / `_formatted` guide

[dichotommy]

On the "guide" side of Meilisearch's documentation, we are missing a key resource: a solid guide on searching and understanding the search response.

Specifically, the _formatted field—which is added to search responses when certain parameters are given—is not described in detail in the Learn section of the site, which could make it easy to miss.

Search information can be very spread out on our site, so it would also just be good to have a place to consolidate links to different sections that directly relate to search, e.g. search parameters, known limitations, api keys.

Could also be part of the Meilisearch 101 guide.

A potential structure for the guide:

1. Making an example search (q search parameter)
2. Breaking down the search response (hits array, exhaustiveness, etc.)
3. Adding search parameters (with corresponding looks at responses)

• attributesToHighlight
• matches
• crop

4. Conclusion: links to API reference, API keys guide and anything else that's really relevant (e.g. if in the future we add an article on Meilisearch's intended design patterns—what should happen from the front-end vs. from the back-end—it could be linked here)

[dichotommy]

Check #748 for more information.

[maryamsulemani97]

We'll need a new section called "Search" or something for this guide. We could move all search-related content (Concatenate and split queries and Prefix search)here. We will need to reorder and reorganize it to create one or more guides

[guimachiavelli]

After discussing with @gmourier, we have decided to update the search reference instead of a full guide/tutorial.