Workflow: Added description object to new release workflow

Author: lamATnginx

.github/workflows/release-build.yml

@@ -21,4 +21,4 @@ jobs:
             -H "Authorization: Bearer ${{ secrets.DOCUMENTATION_SLACK_FLOW_PAT }}" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
             "https://api.github.com/repos/${{ env.OWNER }}/${{ env.REPO }}/dispatches" \
-            -d "{\"event_type\": \"trigger-preview-build\", \"client_payload\": {\"environment\": \"preview\", \"hugo_theme_override\": \"\", \"author\": \"${{ github.event.release.author.login }}\", \"tag_name\": \"${{ github.event.release.tag_name }}\", \"release_name\": \"${{ github.event.release.name }}\"}}"
+            -d "{\"event_type\": \"trigger-preview-build\", \"client_payload\": {\"environment\": \"preview\", \"hugo_theme_override\": \"\", \"description\": \"${{ github.event.release.body }}\", \"author\": \"${{ github.event.release.author.login }}\", \"tag_name\": \"${{ github.event.release.tag_name }}\", \"release_name\": \"${{ github.event.release.name }}\"}}"