Fix capitalization in documentation.

caps fix

Author: Jill Grant

articles/azure-app-configuration/howto-integrate-azure-managed-service-identity.md

@@ -160,7 +160,7 @@ The following steps describe how to assign the App Configuration Data Reader rol
 spring.cloud.azure.appconfiguration.stores[0].endpoint=<service_endpoint>
 ```
 
-for User Assigned Identity:
+For User Assigned Identity:
 
 ```properties
 spring.cloud.azure.appconfiguration.stores[0].endpoint=<service_endpoint>