wskdeploy reference is confusing on failure to deploy a project

This is part of observations while working with https://github.com/apache/incubator-openwhisk-catalog/pull/268.

Failure to deploy leads to errors like this which are confusing because they mention `wskdeploy undeploy` when using `wsk`.

```
Error: Deployment did not complete sucessfully. Run `wskdeploy undeploy` to remove partially deployed assets.
servicedeployer.go [1660]: [ERROR_WHISK_CLIENT_ERROR]: Error code: 147: The supplied authentication is not authorized to access 'guest/watson-textToSpeech'. (code 702f9dfbfc752ee58b0546d6a15d6cb2): HTTP Response Status: 403 Forbidden HTTP Response Body: {"code":"702f9dfbfc752ee58b0546d6a15d6cb2","error":"The supplied authentication is not authorized to access 'guest/watson-textToSpeech'."}
```