fix: update Marketplace badge URL to correct action slug (#361)

Co-authored-by: Ajit Pratap Singh <ajitpratapsingh@Ajits-Mac-mini-2655.local>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

README.md

@@ -10,7 +10,7 @@
 [![Release](https://img.shields.io/github/v/release/ajitpratap0/GoSQLX?style=for-the-badge&color=orange)](https://github.com/ajitpratap0/GoSQLX/releases)
 [![License: Apache-2.0](https://img.shields.io/badge/License-Apache--2.0-blue.svg?style=for-the-badge)](https://www.apache.org/licenses/LICENSE-2.0)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=for-the-badge)](http://makeapullrequest.com)
-[![GitHub Marketplace](https://img.shields.io/badge/Marketplace-GoSQLX%20Lint-blue?style=for-the-badge&logo=github)](https://github.com/marketplace/actions/gosqlx-sql-validator)
+[![GitHub Marketplace](https://img.shields.io/badge/Marketplace-GoSQLX%20Lint-blue?style=for-the-badge&logo=github)](https://github.com/marketplace/actions/gosqlx-lint-action)
 
 [![Tests](https://img.shields.io/github/actions/workflow/status/ajitpratap0/GoSQLX/test.yml?branch=main&label=Tests&style=flat-square)](https://github.com/ajitpratap0/GoSQLX/actions)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ajitpratap0/GoSQLX?style=flat-square)](https://goreportcard.com/report/github.com/ajitpratap0/GoSQLX)