Fix typo in welcome.yml for repo_token (#18)

Author: rezwana-karim

.github/workflows/welcome.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Welcome first-time contributors
         uses: actions/first-interaction@v3
         with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
 
           issue_message: |
             👋 Thanks for opening your first issue in StormCom!