Update migrate-dotnet-to-isolated-model.md

Author: komayama

articles/azure-functions/migrate-dotnet-to-isolated-model.md

@@ -357,7 +357,7 @@ namespace Company.Function
 
 Upgrading your function app to the isolated model consists of two steps:
 
-1. Change the configuration of the function app to use the isolated model by setting the `FUNCTIONS_WORKER_RUNTIME` application setting to "dotnet-isolated". Make sure that any deployment automation is similarly updated.
+1. Change the configuration of the function app to use the isolated model by setting the `FUNCTIONS_WORKER_RUNTIME` application setting to `dotnet-isolated`. Make sure that any deployment automation is similarly updated.
 2. Publish your migrated project to the updated function app. 
 
 When you use Visual Studio to publish an isolated worker model project to an existing function app that uses the in-process model, you're prompted to let Visual Studio update the function app during deployment. This accomplishes both steps at once.