fix link to kubectl docs in docs/README.md

docs/README.md

@@ -7,7 +7,7 @@
 * The [Developer guide](developer-guide.md) is for anyone wanting to write programs that access the kubernetes API,
  write plugins or extensions, or modify the core code of kubernetes.
 
-* The [Kubectl Command Line Interface]([kubectl.md](kubectl.md)) is a detailed reference on the `kubectl` CLI.
+* The [Kubectl Command Line Interface](kubectl.md) is a detailed reference on the `kubectl` CLI.
 
 * The [API object documentation](http://kubernetes.io/third_party/swagger-ui/) is a detailed description of all fields found in core API objects.