correct unittest url

Author: 7astro7

.github/workflows/unittest.yml

@@ -34,7 +34,7 @@ jobs:
         run: pytest --junitxml=test-results.xml
 
       - name: Upload Test Results
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Test Results
           path: test-results.xml

README.md

@@ -2,7 +2,7 @@
 [![PyPI](https://img.shields.io/pypi/v/full_fred)](https://pypi.org/project/full_fred/)
 ![PyPI Downloads](https://img.shields.io/pypi/dm/full_fred)
 ![GitHub issues](https://img.shields.io/github/issues/7astro7/full_fred)
-![Unit Tests](https://github.com/7astro7/full_fred/actions/workflows/unittests.yml/badge.svg)
+![Unit Tests](https://github.com/7astro7/full_fred/actions/workflows/unittest.yml/badge.svg)
 ![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)