Fix typo in docs

Author: wmnnd

README.md

@@ -69,7 +69,7 @@ defmodule ShoppingCartLive
     {:noreply, socket}
   end
 
-  defp put_sesion_assigns(socket, session) do
+  defp put_session_assigns(socket, session) do
     socket
     |> assign(:shopping_cart, Map.get(session, "shopping_cart", []))
   end

lib/phoenix_live_session.ex

@@ -60,7 +60,7 @@ defmodule PhoenixLiveSession do
         {:noreply, socket}
       end
 
-      defp put_sesion_assigns(socket, session) do
+      defp put_session_assigns(socket, session) do
         socket
         |> assign(:shopping_cart, Map.get(session, "shopping_cart", []))
       end