Update slackprnotification.yml

Author: RodEsp

.github/workflows/slackprnotification.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     - name: Notify slack pr open
       env:
-        SLACK_WEBHOOK_URL : ${{ secrets.CLI_TEAM_SLACK_WEBHOOK_URL }}
+        WEBHOOK_URL : ${{ secrets.CLI_TEAM_SLACK_WEBHOOK_URL }}
         PULL_REQUEST_NUMBER : ${{ github.event.pull_request.number }}
         PULL_REQUEST_TITLE : ${{ github.event.pull_request.title }}
         PULL_REQUEST_AUTHOR_NAME : ${{ github.event.pull_request.user.login }}