chore: update README.md (#48)

## Description

Adds package description to readme.

## Related Issue

Fixes #
<!-- or -->
Relates to #

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [X] Other (security config, docs update, etc)

## Checklist before merging

- [X] Test, docs, adr added or updated as needed
- [X] [Contributor Guide
Steps](https://github.com/defenseunicorns/uds-package-docuseal/blob/main/CONTRIBUTING.md#developer-workflow)
followed

README.md

@@ -10,6 +10,8 @@
 
 This package is designed for use as part of a [UDS Software Factory](https://github.com/defenseunicorns/uds-software-factory) bundle deployed on [UDS Core](https://github.com/defenseunicorns/uds-core).
 
+> Valkey is a high-performance, in-memory data store that offers a flexible and scalable solution for caching, message queuing, and primary database needs. It supports a wide range of data structures and can be deployed as a standalone daemon or in a cluster for high availability.
+
 ## Prerequisites
 
 This package requires a Kubernetes Cluster providing a Storage Class that has [UDS Core](https://github.com/defenseunicorns/uds-core) installed into it.  You can learn more about configuring this package in the [configuration documentation](./docs/configuration.md)