4.21/main Health Check, please don't merge this!

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

Author: DaanHoogland

README.md

@@ -49,7 +49,7 @@
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
-Apache CloudStack is open source software designed to deploy and manage large
+Apache CloudStack is open-source software designed to deploy and manage large
 networks of virtual machines, as a highly available, highly scalable
 Infrastructure as a Service (IaaS) cloud computing platform. CloudStack is used
 by a number of service providers to offer public cloud services, and by many