Update capital-connector.md

Add more detail to prerequisite on Capital side

Author: khode-mx

content/en/docs/marketplace/platform-supported-content/modules/siemens/capital-connector.md

@@ -18,7 +18,7 @@ The Capital connector is licensed under the [Apache V2.0 License](https://www.ap
 ### Prerequisites
 
 * Studio Pro version 10.24.3 or above
-* A Capital instance
+* A Capital instance, with licensed Capital Integration Server (CIS) enabled and running
 
 ### Dependencies {#dependencies}