fix: made for uds badge url (#150)

## Description

Unsure if this should be bronze/silver/gold in particular, just updated
to be 1:1 with the old link.

## Related Issue

N/A

## 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-gitlab/blob/main/CONTRIBUTING.md#developer-workflow)
followed

README.md

@@ -1,6 +1,6 @@
 # 🏭 UDS Mattermost Package
 
-[<img alt="Made for UDS" src="https://raw.githubusercontent.com/defenseunicorns/uds-common/main/docs/made-for-uds.svg" height="20px"/>](https://github.com/defenseunicorns/uds-core)
+[<img alt="Made for UDS" src="https://raw.githubusercontent.com/defenseunicorns/uds-common/refs/heads/main/docs/assets/made-for-uds-silver.svg" height="20px"/>](https://github.com/defenseunicorns/uds-core)
 [![Latest Release](https://img.shields.io/github/v/release/defenseunicorns/uds-package-mattermost)](https://github.com/defenseunicorns/uds-package-mattermost/releases)
 [![Build Status](https://img.shields.io/github/actions/workflow/status/defenseunicorns/uds-package-mattermost/release.yaml)](https://github.com/defenseunicorns/uds-package-mattermost/actions/workflows/release.yaml)
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/defenseunicorns/uds-package-mattermost/badge)](https://api.securityscorecards.dev/projects/github.com/defenseunicorns/uds-package-mattermost)
@@ -92,4 +92,4 @@ Please see the [CONTRIBUTING.md](./CONTRIBUTING.md)
 
 ## Development
 
-When developing this package it is ideal to utilize the json schemas for UDS Bundles, Zarf Packages and Maru Tasks. This involves configuring your IDE to provide schema validation for the respective files used by each application. For guidance on how to set up this schema validation, please refer to the [guide](https://github.com/defenseunicorns/uds-common/blob/main/docs/development-ide-configuration.md) in uds-common.
+When developing this package it is ideal to utilize the json schemas for UDS Bundles, Zarf Packages and Maru Tasks. This involves configuring your IDE to provide schema validation for the respective files used by each application. For guidance on how to set up this schema validation, please refer to the [guide](https://github.com/defenseunicorns/uds-common/blob/main/docs/development-ide-configuration.md) in uds-common.