Update build.yml

Author: Githubguy132010

.github/workflows/build.yml

@@ -63,7 +63,7 @@ jobs:
           tag_name: v${{ github.run_id }}-release
           release_name: "Arch Linux Release"
           body: |
-            This release contains the Arch Linux ISO built on ${{ github.run_id }}.
+            This release contains the Arch Linux ISO built on ${{ steps.date.outputs.date }}.
           draft: false
           prerelease: false