Fix pulumi.com hyperlink in README
# Pulumi Node.js SDK
:warning: **Pulumi is in private beta. This package may not work unless you are already participating.
-Please visit [https://pulumi.com/](pulumi.com) to register for access.**
+Please visit [pulumi.com](https://pulumi.com/) to register for access.**
The Pulumi Node.js SDK lets you write cloud programs in JavaScript.
