Merge pull request tinkerbell#27 from joelrebel/master

Update link to workflow doc

docs/writing-workflow.md

@@ -82,7 +82,7 @@ We can create a workflow using the above created (or existing) template and targ
  $ tinkerbell workflow create -t edb80a56-b1f2-4502-abf9-17326324192b -r 9356ae1d-6165-4890-908d-7860ed04b421
 ```
 
-The above command returns a UUID for the workflow thus created. The workflow ID can be used for getting further details about a workflow. Please refer the [Tinkerbell CLI reference](cli.md) for the same.
+The above command returns a UUID for the workflow thus created. The workflow ID can be used for getting further details about a workflow. Please refer the [Tinkerbell CLI reference](cli/workflow.md) for the same.
 
 It's a good practice to verify that the targets have been well substituted in the template. In order to do so, use the following command:
 ```yaml