Update README.md

Author: hikalkan

README.md

@@ -3,7 +3,7 @@
 * This is a sample project to show usage of OData within an ABP based application.
 * It also shows how to host a Web API in an empty Web application.
 
-# How to test
+## How to test
 
 * Restore all nuget packages.
 * Set AbpODataDemo.WebHost as startup project