Fix workflow

Author: hugoalh

.github/workflows/announce-new-release-discord.yml

@@ -33,7 +33,7 @@ jobs:
                     inline: false
                   - name: "Releases"
                     value: |
-                      **- GitHub (& Changelog):** ${{github.event.repository.html_url}}
+                      **- GitHub (& Changelog):** ${{github.event.release.html_url}}
                       **- PowerShell Gallery:** https://www.powershellgallery.com/packages/hugoalh.GitHubActionsToolkit
                     inline: false
           wait: "true"