Correct syntax with mix format

lib/pleroma/user.ex

@@ -323,7 +323,7 @@ def increase_note_count(%User{} = user) do
   end
 
   def decrease_note_count(%User{} = user) do
-    note_count = (user.info["note_count"] || 0)
+    note_count = user.info["note_count"] || 0
     note_count = if note_count <= 0, do: 0, else: note_count - 1
     new_info = Map.put(user.info, "note_count", note_count)