Rename nav_section -> current_section

lib/music_library_web/live/collection_live/index.ex

@@ -17,7 +17,7 @@ defmodule MusicLibraryWeb.CollectionLive.Index do
 
   @impl true
   def mount(_params, _session, socket) do
-    {:ok, assign(socket, :nav_section, :collection)}
+    {:ok, assign(socket, :current_section, :collection)}
   end
 
   @impl true

lib/music_library_web/live/collection_live/show.ex

@@ -38,7 +38,7 @@ defmodule MusicLibraryWeb.CollectionLive.Show do
 
     {:noreply,
      socket
-     |> assign(:nav_section, :collection)
+     |> assign(:current_section, :collection)
      |> assign(:page_title, page_title(socket.assigns.live_action, record))
      |> assign(:record, record)}
   end