Add pkg.go.dev link to Go badge

Author: lemon-mint

README.md

@@ -7,9 +7,12 @@
 <br>
 
 <div align="center">
-  <img src="https://img.shields.io/badge/Go-00ADD8?style=for-the-badge&logo=go&logoColor=white" alt="Go" />
+
+  [![Go Reference](https://img.shields.io/badge/go-%23007d9c?style=for-the-badge&logo=go&logoColor=white)](https://pkg.go.dev/github.com/unsafe-risk/go-safe)
+
 </div>
 
+
 ## Description
 
 Use nil safety value
@@ -77,4 +80,4 @@ import (
 - Ui32Zero() uint32  
 - Ui64Zero() uint64  
 - F32Zero() float32  
-- F64Zero() float64  
+- F64Zero() float64