Many links in the source code are broken (404)

[ellnix]

Noticed some old links that 404 while working on #634 . Wrote this quick (bad) script to try to find more of them, and there were quite a few:

for line in $(rg https://\[\^\\s\)\"\]+\\.com\[\^\\s\>\)\"\]+ src -n -o); do    
  link="$(echo $line | cut -d':' -f3-)"
  curl -o /dev/null --silent --head --write-out "%{http_code} $line\n" "$link"
done | rg 404

404 src/key.rs:659:https://www.meilisearch.com/docs/reference/api/search.md#search-in-an-index-with-post-route
404 src/key.rs:659:https://www.meilisearch.com/docs/reference/api/search.md#search-in-an-index-with-get-route
404 src/key.rs:662:https://www.meilisearch.com/docs/reference/api/documents.md#add-or-replace-documents
404 src/key.rs:662:https://www.meilisearch.com/docs/reference/api/documents.md#add-or-update-documents
404 src/key.rs:665:https://www.meilisearch.com/docs/reference/api/documents.md#get-one-document
404 src/key.rs:665:https://www.meilisearch.com/docs/reference/api/documents.md#get-documents
404 src/key.rs:668:https://www.meilisearch.com/docs/reference/api/documents.md#delete-one-document
404 src/key.rs:668:https://www.meilisearch.com/docs/reference/api/documents.md#delete-all-documents
404 src/key.rs:668:https://www.meilisearch.com/docs/reference/api/documents.md#delete-documents-by-batch
404 src/key.rs:671:https://www.meilisearch.com/docs/reference/api/indexes.md#create-an-index
404 src/key.rs:674:https://www.meilisearch.com/docs/reference/api/indexes.md#get-one-index
404 src/key.rs:674:https://www.meilisearch.com/docs/reference/api/indexes.md#list-all-indexes
404 src/key.rs:677:https://www.meilisearch.com/docs/reference/api/indexes.md#update-an-index
404 src/key.rs:680:https://www.meilisearch.com/docs/reference/api/indexes.md#delete-an-index
404 src/key.rs:683:https://www.meilisearch.com/docs/reference/api/tasks.md#get-task
404 src/key.rs:683:https://www.meilisearch.com/docs/reference/api/tasks.md#get-all-tasks
404 src/key.rs:683:https://www.meilisearch.com/docs/reference/api/tasks.md#get-task-by-index
404 src/key.rs:683:https://www.meilisearch.com/docs/reference/api/tasks.md#get-all-tasks-by-index
404 src/key.rs:686:https://www.meilisearch.com/docs/reference/api/settings.md#get-settings
404 src/key.rs:689:https://www.meilisearch.com/docs/reference/api/settings.md#update-settings
404 src/key.rs:689:https://www.meilisearch.com/docs/reference/api/settings.md#reset-settings
404 src/key.rs:692:https://www.meilisearch.com/docs/reference/api/stats.md#get-stats-of-an-index
404 src/key.rs:692:https://www.meilisearch.com/docs/reference/api/stats.md#get-stats-of-all-indexes
404 src/key.rs:695:https://www.meilisearch.com/docs/reference/api/dump.md#create-a-dump
404 src/key.rs:698:https://www.meilisearch.com/docs/reference/api/dump.md#get-dump-status
404 src/key.rs:701:https://www.meilisearch.com/docs/reference/api/version.md#get-version-of-meilisearch
404 src/settings.rs:798:https://www.meilisearch.com/docs/learn/configuration/typo_tolerance#typo-tolerance
404 src/settings.rs:1465:https://www.meilisearch.com/docs/learn/configuration/typo_tolerance#typo-tolerance
404 src/settings.rs:1593:https://www.meilisearch.com/docs/learn/configuration/proximity-precision
404 src/settings.rs:1976:https://www.meilisearch.com/docs/learn/configuration/displayed_searchable_attributes#searchable-fields
404 src/settings.rs:2109:https://www.meilisearch.com/docs/learn/configuration/typo_tolerance#typo-tolerance
404 src/settings.rs:2142:https://www.meilisearch.com/docs/learn/configuration/typo_tolerance#typo-tolerance
404 src/errors.rs:11:https://github.com/meilisearch/Meilisearch/blob/main/meilisearch-error/src/lib.rs