docs: Update README.md

docs/README.md

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 # Welcome to Numerous Files
 
-The purpose of this package is to make a simple way to interface with both cloud, local and in-memory file storage to support a development and production workflow for web applications needing file storage. The idea is to have a common inteface where the backend can be changed without making code changes by setting env variables. In this way local development and testing can use in-memory or local file storage, eventually run tests with a cloud file storage provider and use cloud file storage in production.
+The purpose of this package is to make a simple way to interface with both cloud, local, and in-memory file storage to support a development and production workflow for web applications needing file storage. The idea is to have a common inteface where the backend can be changed without making code changes by setting env variables. In this way local development and testing can use in-memory or local file storage, eventually run tests with a cloud file storage provider and use cloud file storage in production.
 
 Simply use the factory method to get a file manager instance. You can control which file manager will be used by setting the env variable `NUMEROUS_FILES_BACKEND` to either `IN-MEMORY` to use the memory based file system, `LOCAL` to use a local folder, or `AWS_S3` to use an S3 bucket on AWS.