Update README.rst

Author: Abhi Keshav

README.rst

@@ -27,7 +27,7 @@ Linux
    # Use the below for Ubuntu Xenial
    $ wget https://devhub.cisco.com/artifactory/debian-ydk/0.7.0/libydk_0.7.0-1_amd64.deb
    # Use the below for Ubuntu Artful
-   $ wget http://engci-maven.cisco.com/artifactory/debian-ydk/0.7.0/artful/libydk_0.7.0-1_amd64.deb
+   $ wget http://devhub.cisco.com/artifactory/debian-ydk/0.7.0/artful/libydk_0.7.0-1_amd64.deb
    $ sudo gdebi libydk_0.7.0-1_amd64.deb
 
 **Centos (Fedora-based)** - The following packages must be present in your system before installing YDK-Py::