added ssl-wildcard link info.

README.md

 ## Generate a wildcard ssl certificate request for a subdomain, e.g, *.foobar.stanford.edu:
 
+For wildcard cert prerequisites, please refer: [ssl-wildcard](https://uit.stanford.edu/service/ssl/wildcard).
+
 ```
-$ git clone git@code.stanford.edu:devops-tools/star-cert-request.git
+$ git clone git@code.stanford.edu:devops-tools/ssh-certificate-utils.git
 $ cd star-cert-request
 $ ./create-star-cert-req.sh -s foobar -o "Your Organization Name" -e "your-contact-email@lists.stanford.edu"
 ```
@@ -18,10 +20,6 @@ To make sure everything looks good before you submit the request:
 $ openssl req -noout -text -in foobar.stanford.edu.csr
 ```
 
-Normally you can use [cert request form](https://tools.stanford.edu/cgi-bin/cert-request) to submit 
-your request, however, if the subdomain is delegated to a cloud vendor, you will need to send the csr to 
-**its-ssl-service@lists.stanford.edu** because the form cannot verify the ownership of a domain from NetDB.
-
 ## Upload cert to AWS IAM service
 
 ```