Update installation command to specific version

Author: asim

cmd/micro/README.md

@@ -7,7 +7,7 @@ Go Micro Command Line
 Install `micro` via `go install`
 
 ```
-go install go-micro.dev/v5/cmd/micro@latest
+go install go-micro.dev/v5/cmd/micro@v5.10.0
 ```
 
 Or via install script