Merge pull request #77 from Gusto/raquel/update-url

capitalize SLACK_WEBHOOK_URL

Author: rqsilva

.github/workflows/sdk_generation.yaml

@@ -31,4 +31,4 @@ jobs:
       npm_token: ${{ secrets.NPM_TOKEN }}
       openapi_doc_auth_token: ${{ secrets.OPENAPI_DOC_AUTH_TOKEN }}
       speakeasy_api_key: ${{ secrets.SPEAKEASY_API_KEY }}
-      slack_webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}
+      SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}