Update s3-repository.md (#2131)

I'd like to add an internal anchor to the admonition called `using MinIO
with Elasticserach` in order to link to that specific statement from
other places.

What do you think @shainaraskas ?

Author: eedugon

deploy-manage/tools/snapshot-and-restore/s3-repository.md

@@ -384,6 +384,7 @@ There are many systems, including some from very well-known storage vendors, whi
 
 You can perform some basic checks of the suitability of your storage system using the [repository analysis API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-snapshot-repository-analyze). If this API does not complete successfully, or indicates poor performance, then your storage system is not fully compatible with AWS S3 and therefore unsuitable for use as a snapshot repository. However, these checks do not guarantee full compatibility.
 
+$$$using-minio-with-elasticsearch$$$
 ::::{admonition} Using MinIO with {{es}}
 [MinIO](https://minio.io) is an example of a storage system that provides an S3-compatible API. The `s3` repository type allows {{es}} to work with MinIO-backed repositories as well as repositories stored on AWS S3. The {{es}} test suite includes some checks which aim to detect deviations in behavior between MinIO and AWS S3. Elastic will report directly to the MinIO project any deviations in behavior found by these checks. If you are running a version of MinIO whose behavior deviates from that of AWS S3 then you must upgrade your MinIO installation. If in doubt, please contact the MinIO support team for further information.