chore: Expand message on submitting code feedback

lib/medical_transcription/feedback.ex

@@ -11,13 +11,19 @@ defmodule MedicalTranscription.Feedback do
 
     case Repo.insert(changeset) do
       {:ok, _code_feedback} ->
-        {:ok, "Success!"}
+        {:ok, message_for_response(params)}
 
       {:error, changeset} ->
         {:error, Repo.collect_errors(changeset)}
     end
   end
 
+  defp message_for_response(params) do
+    action = if params["response"] == "true", do: "upvoted", else: "downvoted"
+
+    "Successfully #{action} code"
+  end
+
   def lookup_feedback_for_vector(text, code_vector_id) do
     query = from f in CodeFeedback, where: f.code_vector_id == ^code_vector_id and f.text == ^text