{LYN-2848} Asset Processor: Modifying the Allowed or Rejected list merges previously existing Connections into one record (#363)

{LYN-2848} Asset Processor: Modifying the Allowed or Rejected list merges previously existing Connections into one record
https://jira.agscollab.com/browse/LYN-2848
launched ap gui and tested manually.

Code/Tools/AssetProcessor/native/utilities/assetUtils.cpp

@@ -713,7 +713,7 @@ namespace AssetUtilities
         }
 
         // Update Settings Registry with new token
-        AZStd::string azNewAllowedList{ newAllowedList.join(', ').toUtf8().constData() };
+        AZStd::string azNewAllowedList{ newAllowedList.join(',').toUtf8().constData() };
         settingsRegistry->Set(allowedListKey, azNewAllowedList);
 
         return AssetUtilsInternal::DumpAssetProcessorUserSettingsToFile(*settingsRegistry, assetProcessorUserSetregPath);