[apicenter] Regen swagger to add "title" properties

Author: mikeharder

specification/apicenter/resource-manager/Microsoft.ApiCenter/preview/2024-03-15-preview/apicenter.json

@@ -4026,6 +4026,7 @@
     },
     "CustomProperties": {
       "type": "object",
+      "title": "Custom Properties",
       "description": "The custom metadata defined for API catalog entities."
     },
     "DeletedService": {

specification/apicenter/resource-manager/Microsoft.ApiCenter/stable/2024-03-01/apicenter.json

@@ -3837,6 +3837,7 @@
     },
     "CustomProperties": {
       "type": "object",
+      "title": "Custom Properties",
       "description": "The custom metadata defined for API catalog entities."
     },
     "Deployment": {