Maryam

Part of #1351 This page's sidebar will look different from the rest because of `sidebarDepth: 2`

This PR uses a single page to document all the settings Part of #1351

Part of #1351 This PR updates the tasks and keys API reference to add an object heading and removes the tasks table from async operations page ## For reviewers -...

update quick start code sample

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closes #1758

remove 400 - Bad Request FAQ

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part of #1593 Moves content from the `400 - Bad Request` FAQ to Core concepts/Documents

- Update [Getting ready for production](https://docs.meilisearch.com/learn/getting_started/getting_ready_for_production.html) to add multitenancy and tenant tokens - Update [Fine-tuning search results](https://docs.meilisearch.com/learn/getting_started/customizing_relevancy.html) to add faceting and pagination

We should use "indexing" instead of "indexation" in the docs as most dictionaries still list it as a term with a very specific meaning in economy. [Slack thread](https://meilisearch.slack.com/archives/C010VV3SHQF/p1659009679811079)

This PR fixes typos and adds words to `accept.txt`

part #1593 This PR removes FAQs that aren't very useful

closes #1723