Update README.md

S3 consistency has changed since December 2020 
(https://aws.amazon.com/fr/about-aws/whats-new/2020/12/amazon-s3-now-delivers-strong-read-after-write-consistency-automatically-for-all-applications/)

README.md

@@ -235,8 +235,7 @@ Data uploaded into S3 is spread across multiple files and facilities. The files
 ### S3 Key Details:
 - Objects (regular files or directories) are stored in S3 with a key, value, version ID, and metadata. They can also contain torrents and sub resources for access control lists which are basically permissions for the object itself.
 - The data consistency model for S3 ensures immediate read access for new objects after the initial PUT requests. These new objects are introduced into AWS for the first time and thus do not need to be updated anywhere so they are available immediately.
-- The data consistency model for S3 ensures eventual read consistency for PUTS and DELETES of already existing objects. This is because the change takes a little time to propagate across the entire Amazon network.
-- Because of the eventual consistency model when updating existing objects in S3, those updates might not be immediately reflected. As object updates are made to the same key, an older version of the object might be provided back to the user when the next read request is made. 
+- The data consistency model for S3 also ensures immediate read access for PUTS and DELETES of already existing objects, <a href="https://aws.amazon.com/fr/about-aws/whats-new/2020/12/amazon-s3-now-delivers-strong-read-after-write-consistency-automatically-for-all-applications/">since Decembre 2020</a>.
 - Amazon guarantees 99.999999999% (or 11 9s) durability for all S3 storage classes except its Reduced Redundancy Storage class.
 - S3 comes with the following main features: