Fix calling correct background function

Author: RoyalIcing

apps/components_guide_web/lib/components_guide_web/templates/web_standards/http-caching.html.md

@@ -1,5 +1,13 @@
 # HTTP Caching
 
+<live-render>
+ComponentsGuideWeb.WebStandards.Live.HttpCaching
+</live-render>
+
+<div>
+<%= live_render(@conn, ComponentsGuideWeb.WebStandards.Live.HttpCaching, session: %{}) %>
+</div>
+
 ## Resource that does not want to be cached
 
 ```http
@@ -120,3 +128,4 @@ Vary: Accept-Encoding
 - [MDN: HTTP caching](https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching)
 - [MDN: If-None-Match](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-None-Match)
 - [MDN: 412 Precondition Failed](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/412)
+- [Ryan Florence explains HTTP caching basics by building a Node.js server](https://www.youtube.com/watch?v=3XkU_DXcgl0)

apps/components_guide_web/lib/components_guide_web/templates/web_standards/http_caching_live.ex

@@ -0,0 +1,14 @@
+defmodule ComponentsGuideWeb.WebStandards.Live.HttpCaching do
+  use ComponentsGuideWeb, :live_view
+  alias ComponentsGuideWeb.StylingHelpers
+
+  def mount(_params, _session, socket) do
+    {:ok, assign(socket, state: %{})}
+  end
+
+  def render(assigns) do
+    ~L"""
+    <p>Hello!</p>
+    """
+  end
+end