Update redirects.csv for Approval Workflows

Author: stephanieelliott

docs/redirects.csv

@@ -894,3 +894,4 @@ https://help.expensify.com/articles/expensify-classic/bank-accounts-and-payments
 https://help.expensify.com/articles/Unlisted/Compliance-Documentation.md,https://help.expensify.com/articles/new-expensify/settings/Encryption-and-Data-Security
 https://help.expensify.com/articles/new-expensify/workspaces/Verify-a-Domain,https://help.expensify.com/articles/new-expensify/workspaces/Claim-and-Verify-a-Domain
 https://community.expensify.com/discussion/4751/how-to-add-an-ach-business-bank-account-to-reimburse-employees-us-only,https://help.expensify.com/articles/expensify-classic/bank-accounts-and-payments/bank-accounts/Connect-US-Business-Bank-Account
+https://community.expensify.com/discussion/5700/deep-dive-approval-workflow-overview/,https://help.expensify.com/articles/expensify-classic/reports/Create-a-report-approval-workflow