fix broken link

Signed-off-by: Nshinebayar-g <shinebayar.gansukh@gmail.com>

CONTRIBUTING.md

@@ -96,7 +96,7 @@ In the development process, it is recommended to use local Kubernetes clusters,
 
 ### 2 Clone fork to local storage
 
-Per Go's [workspace instructions][https://golang.org/doc/code.html#Workspaces], place KubeSphere' code on your `GOPATH` using the following cloning procedure.
+Per Go's [workspace instructions](https://golang.org/doc/code.html#Workspaces), place KubeSphere' code on your `GOPATH` using the following cloning procedure.
 
 1. Define a local working directory: