Apply suggestion from @bfops

Signed-off-by: Zeke Foppa <196249+bfops@users.noreply.github.com>

Author: bfops

.github/workflows/tag-release.yml

@@ -41,7 +41,7 @@ jobs:
           set -euo pipefail
 
           title="${RELEASE_NAME:-${RELEASE_TAG}}"
-          message="SpacetimeDB GitHub release published: [${title}](<${RELEASE_URL}>)"
+          message="SpacetimeDB GitHub release published: [${{github.event.release_name}}](<${{github.event.release.html_url}}>)"
 
           data="$(jq --null-input --arg msg "$message" '.content=$msg')"
           curl -X POST -H 'Content-Type: application/json' -d "$data" "${{ secrets.DISCORD_WEBHOOK_RELEASE_CHANNEL_URL }}"