Update names in subscribe portion of sync protocol

rojo-test/serve-test-snapshots/serve_test__add_folder_subscribe.snap

@@ -4,7 +4,7 @@ expression: "subscribe_response.intern_and_redact(&mut redactions, ())"
 ---
 messageCursor: 1
 messages:
-  - addedInstances:
+  - added:
       id-3:
         Children: []
         ClassName: Folder
@@ -14,6 +14,6 @@ messages:
         Name: my-new-folder
         Parent: id-2
         Properties: {}
-    removedInstances: []
-    updatedInstances: []
+    removed: []
+    updated: []
 sessionId: id-1

rojo-test/serve-test-snapshots/serve_test__move_folder_of_stuff_subscribe.snap

@@ -4,7 +4,7 @@ expression: "subscribe_response.intern_and_redact(&mut redactions, ())"
 ---
 messageCursor: 1
 messages:
-  - addedInstances:
+  - added:
       id-10:
         Children: []
         ClassName: StringValue
@@ -144,6 +144,6 @@ messages:
           Value:
             Type: String
             Value: "File #5"
-    removedInstances: []
-    updatedInstances: []
+    removed: []
+    updated: []
 sessionId: id-1

rojo-test/serve-test-snapshots/serve_test__scripts_subscribe.snap

@@ -4,9 +4,9 @@ expression: "subscribe_response.intern_and_redact(&mut redactions, ())"
 ---
 messageCursor: 1
 messages:
-  - addedInstances: {}
-    removedInstances: []
-    updatedInstances:
+  - added: {}
+    removed: []
+    updated:
       - changedClassName: ~
         changedMetadata: ~
         changedName: ~

rojo-test/src/internable.rs

@@ -61,8 +61,8 @@ impl<'a> Internable<&'a HashMap<RbxId, Instance<'_>>> for Instance<'a> {
 impl Internable<()> for SubscribeResponse<'_> {
     fn intern(&self, redactions: &mut RedactionMap, _extra: ()) {
         for message in &self.messages {
-            intern_instance_updates(redactions, &message.updated_instances);
-            intern_instance_additions(redactions, &message.added_instances);
+            intern_instance_updates(redactions, &message.updated);
+            intern_instance_additions(redactions, &message.added);
         }
     }
 }