DOCSP-4271 Adds Troubleshooting link to MongoDB Enterprise on Ubuntu page (#3149)

Author: kennethdyer

source/tutorial/install-mongodb-enterprise-on-ubuntu.txt

@@ -72,6 +72,10 @@ Follow these steps to install MongoDB |edition| Edition using the
 
    .. include:: /includes/install-mongodb-apt-get-commands.rst
 
+For help with troubleshooting errors encountered while installing
+MongoDB on Ubuntu, see our
+:ref:`troubleshooting <install-ubuntu-troubleshooting>` guide.
+
 Run MongoDB Enterprise Edition
 ------------------------------