Update pr-merge.yaml

.github/workflows/pr-merge.yaml

@@ -1,5 +1,6 @@
     name: Notify Discord on PR Merge
     on:
+      workflow_dispatch:
       pull_request:
         types: [closed]
 
@@ -13,4 +14,4 @@
             DISCORD_WEBHOOK_BETA_TESTERS: ${{ secrets.DISCORD_WEBHOOK_BETA_TESTERS }}
           if: github.event.pull_request.merged == true
           run: |
-            curl -H "Content-Type: application/json" -d '{"content": "Pull Request #{{ github.event.pull_request.number }} merged by {{ github.actor }}"}' $DISCORD_WEBHOOK_BETA_TESTERS
+            curl -H "Content-Type: application/json" -d '{"content": "Pull Request ${{ github.event.pull_request.number }} merged by ${{ github.actor }}"}' $DISCORD_WEBHOOK_BETA_TESTERS