Minor formatting improvement (#11106)

website/content/docs/provisioners/file.mdx

@@ -40,7 +40,7 @@ The file provisioner can upload both single files and complete directories.
 <Tab heading="HCL2">
 
 ```hcl
-provisioner "file"{
+provisioner "file" {
   source = "app.tar.gz"
   destination = "/tmp/app.tar.gz"
 }