Fixing README subheading

Signed-off-by: Lucas A. Wilson <luke.wilson@dell.com>

README.md

@@ -1,4 +1,5 @@
-# Omnia: Ansible playbook-based deployment of Slurm and Kubernetes on factory-provisioned Dell EMC PowerEdge servers
+# Omnia
+#### Ansible playbook-based deployment of Slurm and Kubernetes on factory-provisioned Dell EMC PowerEdge servers
 
 Omnia (Latin: all or everything) is a deployment tool to turn Dell EMC PowerEdge servers with factory-installed OS images into a functioning Slurm/Kubernetes cluster.