docs: add cache buster to Go Report Card badge for v0.7.1

Author: 1broseidon

README.md

@@ -7,7 +7,7 @@
 A fast, token-efficient tool that transforms your code into optimized context for Claude, ChatGPT, and other LLMs.
 
 [![Go Reference](https://pkg.go.dev/badge/github.com/1broseidon/promptext.svg)](https://pkg.go.dev/github.com/1broseidon/promptext)
-[![Go Report Card](https://goreportcard.com/badge/github.com/1broseidon/promptext)](https://goreportcard.com/report/github.com/1broseidon/promptext)
+[![Go Report Card](https://goreportcard.com/badge/github.com/1broseidon/promptext?v=0.7.1)](https://goreportcard.com/report/github.com/1broseidon/promptext)
 [![codecov](https://codecov.io/gh/1broseidon/promptext/branch/main/graph/badge.svg)](https://codecov.io/gh/1broseidon/promptext)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Release](https://img.shields.io/github/release/1broseidon/promptext.svg)](https://github.com/1broseidon/promptext/releases/latest)