update code

Author: neil-yechenwei

quickstart/201-mysql-fs-db/providers.tf

@@ -4,7 +4,7 @@ terraform {
   required_providers {
     azurerm = {
       source = "hashicorp/azurerm"
-      version = "~>2.0"
+      version = "~>3.0"
     }
   }
 }