Add WebApi-CSharp Template Toggle Description (#37367)

Partial fix for #37202

Author: TanayParikh

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/ide.host.json

@@ -40,6 +40,9 @@
       "name": {
         "text": "Enable _OpenAPI support"
       },
+      "description": {
+        "text": "Enables OpenAPI (Swagger) support"
+      },
       "invertBoolean": true,
       "isVisible": true,
       "defaultValue": true