doc: update README

README.md

@@ -1,7 +1,7 @@
 # typhoon
 
 [![Release](https://github.com/ZEISS/typhoon/actions/workflows/release.yml/badge.svg)](https://github.com/ZEISS/typhoon/actions/workflows/release.yml)
-x6[![Go Report Card](https://goreportcard.com/badge/github.com/zeiss/typhoon)](https://goreportcard.com/report/github.com/zeiss/typhoon)
+[![Go Report Card](https://goreportcard.com/badge/github.com/zeiss/typhoon)](https://goreportcard.com/report/github.com/zeiss/typhoon)
 [![Taylor Swift](https://img.shields.io/badge/secured%20by-taylor%20swift-brightgreen.svg)](https://twitter.com/SwiftOnSecurity)
 [![Volkswagen](https://auchenberg.github.io/volkswagen/volkswargen_ci.svg?v=1)](https://github.com/auchenberg/volkswagen)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)